40213112420 has 48 divisors (see below), whose sum is σ = 93161659248. Its totient is φ = 14485770240.

The previous prime is 40213112399. The next prime is 40213112477. The reversal of 40213112420 is 2421131204.

40213112420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 13599757924 + 26613354496 = 116618^2 + 163136^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 40213112392 and 40213112401.

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, 1875509 + ... + 1896828.

It is an arithmetic number, because the mean of its divisors is an integer number (1940867901).

Almost surely, 2^40213112420 is an apocalyptic number.

It is an amenable number.

40213112420 is an abundant number, since it is smaller than the sum of its proper divisors (52948546828).

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

40213112420 is a wasteful number, since it uses less digits than its factorization.

40213112420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3772400 (or 3772398 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 40213112420 its reverse (2421131204), we get a palindrome (42634243624).

The spelling of 40213112420 in words is "forty billion, two hundred thirteen million, one hundred twelve thousand, four hundred twenty".