402442381494 has 12 divisors (see below), whose sum is σ = 871958493276. Its totient is φ = 134147460492.

The previous prime is 402442381489. The next prime is 402442381499. The reversal of 402442381494 is 494183244204.

402442381494 is a `hidden beast` number, since 40 + 2 + 4 + 42 + 3 + 81 + 494 = 666.

It is an interprime number because it is at equal distance from previous prime (402442381489) and next prime (402442381499).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402442381499) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11178955024 + ... + 11178955059.

It is an arithmetic number, because the mean of its divisors is an integer number (72663207773).

Almost surely, 2^402442381494 is an apocalyptic number.

402442381494 is an abundant number, since it is smaller than the sum of its proper divisors (469516111782).

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

402442381494 is a wasteful number, since it uses less digits than its factorization.

402442381494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22357910091 (or 22357910088 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 45.

The spelling of 402442381494 in words is "four hundred two billion, four hundred forty-two million, three hundred eighty-one thousand, four hundred ninety-four".