402437 has 12 divisors (see below), whose sum is σ = 481536. Its totient is φ = 335160.

The previous prime is 402419. The next prime is 402443. The reversal of 402437 is 734204.

402437 = 9² + 10² + ... + 106².

It is a happy number.

It is not a de Polignac number, because 402437 - 2¹² = 398341 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402487) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2012 + ... + 2202.

It is an arithmetic number, because the mean of its divisors is an integer number (40128).

2⁴⁰²⁴³⁷ is an apocalyptic number.

It is an amenable number.

402437 is a deficient number, since it is larger than the sum of its proper divisors (79099).

402437 is a wasteful number, since it uses less digits than its factorization.

402437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 402437 is about 634.3792241239. The cubic root of 402437 is about 73.8299601967.

The spelling of 402437 in words is "four hundred two thousand, four hundred thirty-seven".