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1402261 = 7200323
BaseRepresentation
bin101010110010110010101
32122020112121
411112112111
5324333021
650015541
714630140
oct5262625
92566477
101402261
118785a3
125775b1
133a1353
14287057
151ca741
hex156595

1402261 has 4 divisors (see below), whose sum is σ = 1602592. Its totient is φ = 1201932.

The previous prime is 1402249. The next prime is 1402267. The reversal of 1402261 is 1622041.

1402261 is nontrivially palindromic in base 8.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1402261 is a prime.

It is a Duffinian number.

1402261 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1402267) 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, 100155 + ... + 100168.

It is an arithmetic number, because the mean of its divisors is an integer number (400648).

21402261 is an apocalyptic number.

It is an amenable number.

1402261 is a deficient number, since it is larger than the sum of its proper divisors (200331).

1402261 is an equidigital number, since it uses as much as digits as its factorization.

1402261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200330.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1402261 is about 1184.1710180544. The cubic root of 1402261 is about 111.9290845720.

It can be divided in two parts, 140 and 2261, that added together give a 4-th power (2401 = 74).

The spelling of 1402261 in words is "one million, four hundred two thousand, two hundred sixty-one".

Divisors: 1 7 200323 1402261