121431121342 has 16 divisors (see below), whose sum is σ = 182484213120. Its totient is φ = 60603113368.

The previous prime is 121431121327. The next prime is 121431121373. The reversal of 121431121342 is 243121134121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4397583 + ... + 4425109.

It is an arithmetic number, because the mean of its divisors is an integer number (11405263320).

Almost surely, 2^121431121342 is an apocalyptic number.

121431121342 is a deficient number, since it is larger than the sum of its proper divisors (61053091778).

121431121342 is a wasteful number, since it uses less digits than its factorization.

121431121342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31535.

The product of its digits is 1152, while the sum is 25.

Adding to 121431121342 its reverse (243121134121), we get a palindrome (364552255463).

The spelling of 121431121342 in words is "one hundred twenty-one billion, four hundred thirty-one million, one hundred twenty-one thousand, three hundred forty-two".