402455234 has 4 divisors (see below), whose sum is σ = 603682854. Its totient is φ = 201227616.

The previous prime is 402455233. The next prime is 402455257. The reversal of 402455234 is 432554204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 367680625 + 34774609 = 19175^2 + 5897^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402455197 and 402455206.

It is not an unprimeable number, because it can be changed into a prime (402455233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100613807 + ... + 100613810.

Almost surely, 2^402455234 is an apocalyptic number.

402455234 is a deficient number, since it is larger than the sum of its proper divisors (201227620).

402455234 is a wasteful number, since it uses less digits than its factorization.

402455234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201227619.

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 402455234 is about 20061.2869477509. The cubic root of 402455234 is about 738.3107523267.

The spelling of 402455234 in words is "four hundred two million, four hundred fifty-five thousand, two hundred thirty-four".