401280132 has 48 divisors (see below), whose sum is σ = 1022918400. Its totient is φ = 121424160.

The previous prime is 401280109. The next prime is 401280137. The reversal of 401280132 is 231082104.

It is a super-2 number, since 2×401280132² = 322051488675874848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401280099 and 401280108.

It is not an unprimeable number, because it can be changed into a prime (401280137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111619 + ... + 115157.

It is an arithmetic number, because the mean of its divisors is an integer number (21310800).

Almost surely, 2^401280132 is an apocalyptic number.

It is an amenable number.

401280132 is an abundant number, since it is smaller than the sum of its proper divisors (621638268).

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

401280132 is a wasteful number, since it uses less digits than its factorization.

401280132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4416 (or 4414 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 401280132 is about 20031.9777356106. The cubic root of 401280132 is about 737.5914704894.

The spelling of 401280132 in words is "four hundred one million, two hundred eighty thousand, one hundred thirty-two".