40124021442 has 16 divisors (see below), whose sum is σ = 80250012192. Its totient is φ = 13374345600.

The previous prime is 40124021437. The next prime is 40124021447. The reversal of 40124021442 is 24412042104.

It is an interprime number because it is at equal distance from previous prime (40124021437) and next prime (40124021447).

It is not an unprimeable number, because it can be changed into a prime (40124021447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407442 + ... + 496242.

It is an arithmetic number, because the mean of its divisors is an integer number (5015625762).

Almost surely, 2^40124021442 is an apocalyptic number.

40124021442 is an abundant number, since it is smaller than the sum of its proper divisors (40125990750).

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

40124021442 is a wasteful number, since it uses less digits than its factorization.

40124021442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164113.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 40124021442 its reverse (24412042104), we get a palindrome (64536063546).

The spelling of 40124021442 in words is "forty billion, one hundred twenty-four million, twenty-one thousand, four hundred forty-two".