400213140 has 48 divisors (see below), whose sum is σ = 1121491392. Its totient is φ = 106638336.

The previous prime is 400213139. The next prime is 400213147. The reversal of 400213140 is 41312004.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400213147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119367 + ... + 122673.

It is an arithmetic number, because the mean of its divisors is an integer number (23364404).

Almost surely, 2^400213140 is an apocalyptic number.

It is an amenable number.

400213140 is an abundant number, since it is smaller than the sum of its proper divisors (721278252).

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

400213140 is a wasteful number, since it uses less digits than its factorization.

400213140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5336 (or 5334 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 400213140 is about 20005.3277903662. The cubic root of 400213140 is about 736.9371455694.

Adding to 400213140 its reverse (41312004), we get a palindrome (441525144).

The spelling of 400213140 in words is "four hundred million, two hundred thirteen thousand, one hundred forty".