121538627343842 has 32 divisors (see below), whose sum is σ = 193351975307712. Its totient is φ = 57099890179584.

The previous prime is 121538627343827. The next prime is 121538627343869. The reversal of 121538627343842 is 248343726835121.

It is a super-3 number, since 3×121538627343842³ (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56190518 + ... + 58313390.

It is an arithmetic number, because the mean of its divisors is an integer number (6042249228366).

Almost surely, 2^{121538627343842} is an apocalyptic number.

121538627343842 is a deficient number, since it is larger than the sum of its proper divisors (71813347963870).

121538627343842 is a wasteful number, since it uses less digits than its factorization.

121538627343842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125682.

The product of its digits is 46448640, while the sum is 59.

The spelling of 121538627343842 in words is "one hundred twenty-one trillion, five hundred thirty-eight billion, six hundred twenty-seven million, three hundred forty-three thousand, eight hundred forty-two".