121770042750 has 48 divisors (see below), whose sum is σ = 329266201680. Its totient is φ = 32472010800.

The previous prime is 121770042701. The next prime is 121770042809. The reversal of 121770042750 is 57240077121.

121770042750 is a `hidden beast` number, since 12 + 177 + 0 + 0 + 427 + 50 = 666.

It is a super-2 number, since 2×121770042750² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27057760 + ... + 27062259.

It is an arithmetic number, because the mean of its divisors is an integer number (6859712535).

Almost surely, 2^121770042750 is an apocalyptic number.

121770042750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121770042750 is an abundant number, since it is smaller than the sum of its proper divisors (207496158930).

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

121770042750 is a wasteful number, since it uses less digits than its factorization.

121770042750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54120042 (or 54120029 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 36.

The spelling of 121770042750 in words is "one hundred twenty-one billion, seven hundred seventy million, forty-two thousand, seven hundred fifty".