401249142 has 36 divisors (see below), whose sum is σ = 1011313836. Its totient is φ = 114642360.

The previous prime is 401249117. The next prime is 401249153. The reversal of 401249142 is 241942104.

It is a happy number.

401249142 is a `hidden beast` number, since 401 + 249 + 14 + 2 = 666.

It is a super-2 number, since 2×401249142² = 322001747911472328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 226584 + ... + 228347.

It is an arithmetic number, because the mean of its divisors is an integer number (28092051).

Almost surely, 2^401249142 is an apocalyptic number.

401249142 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

401249142 is an abundant number, since it is smaller than the sum of its proper divisors (610064694).

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

401249142 is a wasteful number, since it uses less digits than its factorization.

401249142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454953 (or 454943 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 401249142 is about 20031.2042074360. The cubic root of 401249142 is about 737.5724824672.

The spelling of 401249142 in words is "four hundred one million, two hundred forty-nine thousand, one hundred forty-two".