40123401042 has 16 divisors (see below), whose sum is σ = 80255548800. Its totient is φ = 13373009232.

The previous prime is 40123401041. The next prime is 40123401047. The reversal of 40123401042 is 24010432104.

It is a super-2 number, since 2×40123401042² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40123401041) 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, 304042 + ... + 415557.

It is an arithmetic number, because the mean of its divisors is an integer number (5015971800).

Almost surely, 2^40123401042 is an apocalyptic number.

40123401042 is an abundant number, since it is smaller than the sum of its proper divisors (40132147758).

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

40123401042 is a wasteful number, since it uses less digits than its factorization.

40123401042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728897.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 40123401042 its reverse (24010432104), we get a palindrome (64133833146).

The spelling of 40123401042 in words is "forty billion, one hundred twenty-three million, four hundred one thousand, forty-two".