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302420401 = 1272381263
BaseRepresentation
bin10010000001101…
…001000110110001
3210002001112210121
4102001221012301
51104404423101
650001530241
710331350063
oct2201510661
9702045717
10302420401
11145787a18
1285343981
134a8676aa
142c243733
151b83b0a1
hex120691b1

302420401 has 4 divisors (see below), whose sum is σ = 304801792. Its totient is φ = 300039012.

The previous prime is 302420389. The next prime is 302420449. The reversal of 302420401 is 104024203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104024203 = 853121951.

It is a cyclic number.

It is not a de Polignac number, because 302420401 - 25 = 302420369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (302420501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190505 + ... + 1190758.

It is an arithmetic number, because the mean of its divisors is an integer number (76200448).

Almost surely, 2302420401 is an apocalyptic number.

It is an amenable number.

302420401 is a deficient number, since it is larger than the sum of its proper divisors (2381391).

302420401 is a wasteful number, since it uses less digits than its factorization.

302420401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2381390.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 302420401 is about 17390.2386700126. The cubic root of 302420401 is about 671.2284590715.

Adding to 302420401 its reverse (104024203), we get a palindrome (406444604).

The spelling of 302420401 in words is "three hundred two million, four hundred twenty thousand, four hundred one".

Divisors: 1 127 2381263 302420401