40131121442 has 8 divisors (see below), whose sum is σ = 61596605136. Its totient is φ = 19598919732.

The previous prime is 40131121423. The next prime is 40131121447. The reversal of 40131121442 is 24412113104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40131121442² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40131121447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233320388 + ... + 233320559.

It is an arithmetic number, because the mean of its divisors is an integer number (7699575642).

Almost surely, 2^40131121442 is an apocalyptic number.

40131121442 is a deficient number, since it is larger than the sum of its proper divisors (21465483694).

40131121442 is a wasteful number, since it uses less digits than its factorization.

40131121442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466640992.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 40131121442 its reverse (24412113104), we get a palindrome (64543234546).

The spelling of 40131121442 in words is "forty billion, one hundred thirty-one million, one hundred twenty-one thousand, four hundred forty-two".