121873380 has 24 divisors (see below), whose sum is σ = 341245632. Its totient is φ = 32499552.

The previous prime is 121873373. The next prime is 121873387. The reversal of 121873380 is 83378121.

It is an interprime number because it is at equal distance from previous prime (121873373) and next prime (121873387).

It is not an unprimeable number, because it can be changed into a prime (121873387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1015552 + ... + 1015671.

It is an arithmetic number, because the mean of its divisors is an integer number (14218568).

Almost surely, 2^121873380 is an apocalyptic number.

121873380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121873380 is an abundant number, since it is smaller than the sum of its proper divisors (219372252).

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

121873380 is a wasteful number, since it uses less digits than its factorization.

121873380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031235 (or 2031233 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 121873380 is about 11039.6277111142. The cubic root of 121873380 is about 495.7959238934.

The spelling of 121873380 in words is "one hundred twenty-one million, eight hundred seventy-three thousand, three hundred eighty".