40020123012 has 48 divisors (see below), whose sum is σ = 94051531392. Its totient is φ = 13244394240.

The previous prime is 40020122963. The next prime is 40020123019. The reversal of 40020123012 is 21032102004.

It is a super-2 number, since 2×40020123012² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40020122982 and 40020123000.

It is not an unprimeable number, because it can be changed into a prime (40020123019) 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, 1325193 + ... + 1355055.

It is an arithmetic number, because the mean of its divisors is an integer number (1959406904).

Almost surely, 2^40020123012 is an apocalyptic number.

It is an amenable number.

40020123012 is an abundant number, since it is smaller than the sum of its proper divisors (54031408380).

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

40020123012 is a wasteful number, since it uses less digits than its factorization.

40020123012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30668 (or 30666 counting only the distinct ones).

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

Adding to 40020123012 its reverse (21032102004), we get a palindrome (61052225016).

The spelling of 40020123012 in words is "forty billion, twenty million, one hundred twenty-three thousand, twelve".