402154501252 has 48 divisors (see below), whose sum is σ = 830414204928. Its totient is φ = 166824161280.

The previous prime is 402154501249. The next prime is 402154501369. The reversal of 402154501252 is 252105451204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1233373 + ... + 1524964.

It is an arithmetic number, because the mean of its divisors is an integer number (17300295936).

Almost surely, 2^402154501252 is an apocalyptic number.

It is an amenable number.

402154501252 is an abundant number, since it is smaller than the sum of its proper divisors (428259703676).

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

402154501252 is a wasteful number, since it uses less digits than its factorization.

402154501252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2758516 (or 2758514 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 402154501252 its reverse (252105451204), we get a palindrome (654259952456).

The spelling of 402154501252 in words is "four hundred two billion, one hundred fifty-four million, five hundred one thousand, two hundred fifty-two".