121662054 has 72 divisors (see below), whose sum is σ = 288996120. Its totient is φ = 37933272.

The previous prime is 121662053. The next prime is 121662061. The reversal of 121662054 is 450266121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121662053) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1539987 + ... + 1540065.

It is an arithmetic number, because the mean of its divisors is an integer number (4013835).

Almost surely, 2^121662054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121662054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144498060).

121662054 is an abundant number, since it is smaller than the sum of its proper divisors (167334066).

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

121662054 is an equidigital number, since it uses as much as digits as its factorization.

121662054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 121662054 is about 11030.0523117527. The cubic root of 121662054 is about 495.5091913660.

The spelling of 121662054 in words is "one hundred twenty-one million, six hundred sixty-two thousand, fifty-four".