121162140 has 108 divisors (see below), whose sum is σ = 404046552. Its totient is φ = 29367360.

The previous prime is 121162127. The next prime is 121162147. The reversal of 121162140 is 41261121.

121162140 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 621 + 40 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121162147) 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, 18999 + ... + 24561.

Almost surely, 2^121162140 is an apocalyptic number.

121162140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121162140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202023276).

121162140 is an abundant number, since it is smaller than the sum of its proper divisors (282884412).

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

121162140 is a wasteful number, since it uses less digits than its factorization.

121162140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600 (or 5584 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 121162140 is about 11007.3675327028. The cubic root of 121162140 is about 494.8295709575.

It can be divided in two parts, 121 and 162140, that added together give a palindrome (162261).

The spelling of 121162140 in words is "one hundred twenty-one million, one hundred sixty-two thousand, one hundred forty".