400240140 has 48 divisors (see below), whose sum is σ = 1121642592. Its totient is φ = 106638336.

The previous prime is 400240133. The next prime is 400240189. The reversal of 400240140 is 41042004.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93732 + ... + 97908.

It is an arithmetic number, because the mean of its divisors is an integer number (23367554).

Almost surely, 2^400240140 is an apocalyptic number.

It is an amenable number.

400240140 is an abundant number, since it is smaller than the sum of its proper divisors (721402452).

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

400240140 is a wasteful number, since it uses less digits than its factorization.

400240140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5786 (or 5784 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 400240140 is about 20006.0025992201. The cubic root of 400240140 is about 736.9537174519.

Adding to 400240140 its reverse (41042004), we get a palindrome (441282144).

The spelling of 400240140 in words is "four hundred million, two hundred forty thousand, one hundred forty".