402135430 has 8 divisors (see below), whose sum is σ = 723843792. Its totient is φ = 160854168.

The previous prime is 402135389. The next prime is 402135443. The reversal of 402135430 is 34531204.

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

It is a super-2 number, since 2×402135430² = 323425808122569800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20106762 + ... + 20106781.

It is an arithmetic number, because the mean of its divisors is an integer number (90480474).

Almost surely, 2^402135430 is an apocalyptic number.

402135430 is a deficient number, since it is larger than the sum of its proper divisors (321708362).

402135430 is a wasteful number, since it uses less digits than its factorization.

402135430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40213550.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 402135430 is about 20053.3146885995. The cubic root of 402135430 is about 738.1151386029.

Adding to 402135430 its reverse (34531204), we get a palindrome (436666634).

The spelling of 402135430 in words is "four hundred two million, one hundred thirty-five thousand, four hundred thirty".