40121154 has 24 divisors (see below), whose sum is σ = 90709632. Its totient is φ = 12792120.

The previous prime is 40121149. The next prime is 40121167. The reversal of 40121154 is 45112104.

40121154 is a `hidden beast` number, since 401 + 211 + 54 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48042 + ... + 48869.

It is an arithmetic number, because the mean of its divisors is an integer number (3779568).

Almost surely, 2^40121154 is an apocalyptic number.

40121154 is an abundant number, since it is smaller than the sum of its proper divisors (50588478).

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

40121154 is a wasteful number, since it uses less digits than its factorization.

40121154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96942 (or 96939 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 40121154 is about 6334.1261433603. The cubic root of 40121154 is about 342.3401253593.

Adding to 40121154 its reverse (45112104), we get a palindrome (85233258).

The spelling of 40121154 in words is "forty million, one hundred twenty-one thousand, one hundred fifty-four".