121435154154 has 40 divisors (see below), whose sum is σ = 288110862468. Its totient is φ = 38097302400.

The previous prime is 121435154149. The next prime is 121435154173. The reversal of 121435154154 is 451451534121.

121435154154 is a `hidden beast` number, since 1 + 2 + 14 + 3 + 51 + 541 + 54 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 119769289929 + 1665864225 = 346077^2 + 40815^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22044297 + ... + 22049804.

Almost surely, 2^121435154154 is an apocalyptic number.

121435154154 is an abundant number, since it is smaller than the sum of its proper divisors (166675708314).

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

121435154154 is a wasteful number, since it uses less digits than its factorization.

121435154154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44094132 (or 44094123 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

Adding to 121435154154 its reverse (451451534121), we get a palindrome (572886688275).

The spelling of 121435154154 in words is "one hundred twenty-one billion, four hundred thirty-five million, one hundred fifty-four thousand, one hundred fifty-four".