40404010420123 has 12 divisors (see below), whose sum is σ = 49474298474760. Its totient is φ = 32809271618592.

The previous prime is 40404010420043. The next prime is 40404010420127. The reversal of 40404010420123 is 32102401040404.

It is not a de Polignac number, because 40404010420123 - 2²⁵ = 40403976865691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40404010420127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21699252786 + ... + 21699254647.

It is an arithmetic number, because the mean of its divisors is an integer number (4122858206230).

Almost surely, 2^{40404010420123} is an apocalyptic number.

40404010420123 is a deficient number, since it is larger than the sum of its proper divisors (9070288054637).

40404010420123 is a wasteful number, since it uses less digits than its factorization.

40404010420123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43398507466 (or 43398507459 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 40404010420123 its reverse (32102401040404), we get a palindrome (72506411460527).

The spelling of 40404010420123 in words is "forty trillion, four hundred four billion, ten million, four hundred twenty thousand, one hundred twenty-three".