1401281252 has 24 divisors (see below), whose sum is σ = 2803764096. Its totient is φ = 600291648.

The previous prime is 1401281243. The next prime is 1401281263. The reversal of 1401281252 is 2521821041.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65168 + ... + 83960.

It is an arithmetic number, because the mean of its divisors is an integer number (116823504).

Almost surely, 2^1401281252 is an apocalyptic number.

It is an amenable number.

1401281252 is an abundant number, since it is smaller than the sum of its proper divisors (1402482844).

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

1401281252 is a wasteful number, since it uses less digits than its factorization.

1401281252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21467 (or 21465 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1401281252 is about 37433.6914022649. The cubic root of 1401281252 is about 1119.0301052760.

The spelling of 1401281252 in words is "one billion, four hundred one million, two hundred eighty-one thousand, two hundred fifty-two".