121005940 has 24 divisors (see below), whose sum is σ = 277214112. Its totient is φ = 44002080.

The previous prime is 121005923. The next prime is 121005971. The reversal of 121005940 is 49500121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274794 + ... + 275233.

It is an arithmetic number, because the mean of its divisors is an integer number (11550588).

Almost surely, 2^121005940 is an apocalyptic number.

121005940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121005940 is an abundant number, since it is smaller than the sum of its proper divisors (156208172).

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

121005940 is a wasteful number, since it uses less digits than its factorization.

121005940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550047 (or 550045 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 121005940 is about 11000.2699966864. The cubic root of 121005940 is about 494.6168377901.

The spelling of 121005940 in words is "one hundred twenty-one million, five thousand, nine hundred forty".