402502049 has 8 divisors (see below), whose sum is σ = 417585000. Its totient is φ = 387499392.

The previous prime is 402502039. The next prime is 402502057. The reversal of 402502049 is 940205204.

It can be written as a sum of positive squares in 4 ways, for example, as 40551424 + 361950625 = 6368^2 + 19025^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 402502049 - 2⁴ = 402502033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402502039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9764 + ... + 30005.

It is an arithmetic number, because the mean of its divisors is an integer number (52198125).

Almost surely, 2^402502049 is an apocalyptic number.

It is an amenable number.

402502049 is a deficient number, since it is larger than the sum of its proper divisors (15082951).

402502049 is a wasteful number, since it uses less digits than its factorization.

402502049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40147.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 402502049 is about 20062.4537133422. The cubic root of 402502049 is about 738.3393788461.

The spelling of 402502049 in words is "four hundred two million, five hundred two thousand, forty-nine".