402455664230442 has 16 divisors (see below), whose sum is σ = 805520648180352. Its totient is φ = 134050334790240.

The previous prime is 402455664230401. The next prime is 402455664230449. The reversal of 402455664230442 is 244032466554204.

It is not an unprimeable number, because it can be changed into a prime (402455664230449) 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, 25388313058 + ... + 25388328909.

It is an arithmetic number, because the mean of its divisors is an integer number (50345040511272).

Almost surely, 2^{402455664230442} is an apocalyptic number.

402455664230442 is an abundant number, since it is smaller than the sum of its proper divisors (403064983949910).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402455664230442 is a wasteful number, since it uses less digits than its factorization.

402455664230442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50776643293.

The product of its (nonzero) digits is 22118400, while the sum is 51.

The spelling of 402455664230442 in words is "four hundred two trillion, four hundred fifty-five billion, six hundred sixty-four million, two hundred thirty thousand, four hundred forty-two".