401237712 has 120 divisors (see below), whose sum is σ = 1202423040. Its totient is φ = 129392640.

The previous prime is 401237699. The next prime is 401237713. The reversal of 401237712 is 217732104.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401237713) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118864 + ... + 122192.

It is an arithmetic number, because the mean of its divisors is an integer number (10020192).

Almost surely, 2^401237712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401237712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (601211520).

401237712 is an abundant number, since it is smaller than the sum of its proper divisors (801185328).

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

401237712 is a wasteful number, since it uses less digits than its factorization.

401237712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383 (or 3365 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 401237712 is about 20030.9189005397. The cubic root of 401237712 is about 737.5654788937.

Adding to 401237712 its reverse (217732104), we get a palindrome (618969816).

The spelling of 401237712 in words is "four hundred one million, two hundred thirty-seven thousand, seven hundred twelve".