401129240 has 64 divisors (see below), whose sum is σ = 928942560. Its totient is φ = 155796480.

The previous prime is 401129227. The next prime is 401129249. The reversal of 401129240 is 42921104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401129249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453839 + ... + 454721.

Almost surely, 2^401129240 is an apocalyptic number.

401129240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401129240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (464471280).

401129240 is an abundant number, since it is smaller than the sum of its proper divisors (527813320).

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

401129240 is a wasteful number, since it uses less digits than its factorization.

401129240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 401129240 is about 20028.2111033412. The cubic root of 401129240 is about 737.4990075635.

The spelling of 401129240 in words is "four hundred one million, one hundred twenty-nine thousand, two hundred forty".