402154374155492 has 12 divisors (see below), whose sum is σ = 804308748311040. Its totient is φ = 172351874638056.

The previous prime is 402154374155431. The next prime is 402154374155497. The reversal of 402154374155492 is 294551473451204.

402154374155492 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (402154374155497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7181328109892 + ... + 7181328109947.

It is an arithmetic number, because the mean of its divisors is an integer number (67025729025920).

Almost surely, 2^{402154374155492} is an apocalyptic number.

It is an amenable number.

402154374155492 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

402154374155492 is a wasteful number, since it uses less digits than its factorization.

402154374155492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14362656219850 (or 14362656219848 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 56.

The spelling of 402154374155492 in words is "four hundred two trillion, one hundred fifty-four billion, three hundred seventy-four million, one hundred fifty-five thousand, four hundred ninety-two".