402142532490 has 32 divisors (see below), whose sum is σ = 1072380087360. Its totient is φ = 107238008592.

The previous prime is 402142532471. The next prime is 402142532527. The reversal of 402142532490 is 94235241204.

It is a happy number.

402142532490 is a `hidden beast` number, since 40 + 2 + 1 + 42 + 532 + 49 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 744708124 + ... + 744708663.

It is an arithmetic number, because the mean of its divisors is an integer number (33511877730).

Almost surely, 2^402142532490 is an apocalyptic number.

402142532490 is an abundant number, since it is smaller than the sum of its proper divisors (670237554870).

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

402142532490 is a wasteful number, since it uses less digits than its factorization.

402142532490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489416803 (or 1489416797 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 402142532490 its reverse (94235241204), we get a palindrome (496377773694).

The spelling of 402142532490 in words is "four hundred two billion, one hundred forty-two million, five hundred thirty-two thousand, four hundred ninety".