121436940 has 48 divisors (see below), whose sum is σ = 343859040. Its totient is φ = 32017920.

The previous prime is 121436929. The next prime is 121436963. The reversal of 121436940 is 49634121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 121436898 and 121436907.

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, 6031 + ... + 16710.

It is an arithmetic number, because the mean of its divisors is an integer number (7163730).

Almost surely, 2^121436940 is an apocalyptic number.

121436940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121436940 is an abundant number, since it is smaller than the sum of its proper divisors (222422100).

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

121436940 is a wasteful number, since it uses less digits than its factorization.

121436940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22842 (or 22840 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 121436940 is about 11019.8430115860. The cubic root of 121436940 is about 495.2033854554.

The spelling of 121436940 in words is "one hundred twenty-one million, four hundred thirty-six thousand, nine hundred forty".