Search a number
-
+
1202420013 = 317231025081
BaseRepresentation
bin100011110101011…
…0111100100101101
310002210120021011120
41013222313210231
54430304420023
6315152011153
741540254464
oct10752674455
93083507146
101202420013
11567809a53
12296830ab9
13162160b42
14b599d9db
15708678e3
hex47ab792d

1202420013 has 16 divisors (see below), whose sum is σ = 1771341696. Its totient is φ = 721656320.

The previous prime is 1202419963. The next prime is 1202420029. The reversal of 1202420013 is 3100242021.

It is a cyclic number.

It is not a de Polignac number, because 1202420013 - 26 = 1202419949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202419974 and 1202420001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202421013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511368 + ... + 513713.

It is an arithmetic number, because the mean of its divisors is an integer number (110708856).

Almost surely, 21202420013 is an apocalyptic number.

It is an amenable number.

1202420013 is a deficient number, since it is larger than the sum of its proper divisors (568921683).

1202420013 is a wasteful number, since it uses less digits than its factorization.

1202420013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025124.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1202420013 is about 34675.9284374622. The cubic root of 1202420013 is about 1063.3724360599.

Adding to 1202420013 its reverse (3100242021), we get a palindrome (4302662034).

The spelling of 1202420013 in words is "one billion, two hundred two million, four hundred twenty thousand, thirteen".

Divisors: 1 3 17 23 51 69 391 1173 1025081 3075243 17426377 23576863 52279131 70730589 400806671 1202420013