121834380 has 24 divisors (see below), whose sum is σ = 341136432. Its totient is φ = 32489152.

The previous prime is 121834369. The next prime is 121834399. The reversal of 121834380 is 83438121.

It is a super-2 number, since 2×121834380² = 29687232299968800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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

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, 1015227 + ... + 1015346.

It is an arithmetic number, because the mean of its divisors is an integer number (14214018).

Almost surely, 2^121834380 is an apocalyptic number.

121834380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121834380 is an abundant number, since it is smaller than the sum of its proper divisors (219302052).

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

121834380 is a wasteful number, since it uses less digits than its factorization.

121834380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2030585 (or 2030583 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 121834380 is about 11037.8612058677. The cubic root of 121834380 is about 495.7430326497.

The spelling of 121834380 in words is "one hundred twenty-one million, eight hundred thirty-four thousand, three hundred eighty".