121400423514 has 128 divisors (see below), whose sum is σ = 280893849600. Its totient is φ = 38823857280.

The previous prime is 121400423461. The next prime is 121400423531. The reversal of 121400423514 is 415324004121.

121400423514 is a `hidden beast` number, since 1 + 2 + 140 + 0 + 4 + 2 + 3 + 514 = 666.

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 63 ways as a sum of consecutive naturals, for example, 116843007 + ... + 116844045.

It is an arithmetic number, because the mean of its divisors is an integer number (2194483200).

Almost surely, 2^121400423514 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121400423514, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140446924800).

121400423514 is an abundant number, since it is smaller than the sum of its proper divisors (159493426086).

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

121400423514 is a wasteful number, since it uses less digits than its factorization.

121400423514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617 (or 1611 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 121400423514 its reverse (415324004121), we get a palindrome (536724427635).

The spelling of 121400423514 in words is "one hundred twenty-one billion, four hundred million, four hundred twenty-three thousand, five hundred fourteen".