420121412154 has 32 divisors (see below), whose sum is σ = 933631151040. Its totient is φ = 140036268816.

The previous prime is 420121412129. The next prime is 420121412173. The reversal of 420121412154 is 451214121024.

420121412154 is a `hidden beast` number, since 420 + 1 + 21 + 4 + 1 + 215 + 4 = 666.

It is a super-2 number, since 2×420121412154² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 2078377 + ... + 2271539.

It is an arithmetic number, because the mean of its divisors is an integer number (29175973470).

Almost surely, 2^420121412154 is an apocalyptic number.

420121412154 is an abundant number, since it is smaller than the sum of its proper divisors (513509738886).

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

420121412154 is a wasteful number, since it uses less digits than its factorization.

420121412154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233451 (or 233445 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 420121412154 its reverse (451214121024), we get a palindrome (871335533178).

The spelling of 420121412154 in words is "four hundred twenty billion, one hundred twenty-one million, four hundred twelve thousand, one hundred fifty-four".