121265830 has 16 divisors (see below), whose sum is σ = 249461280. Its totient is φ = 41576832.

The previous prime is 121265819. The next prime is 121265857. The reversal of 121265830 is 38562121.

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, 866115 + ... + 866254.

It is an arithmetic number, because the mean of its divisors is an integer number (15591330).

Almost surely, 2^121265830 is an apocalyptic number.

121265830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121265830 is an abundant number, since it is smaller than the sum of its proper divisors (128195450).

121265830 is a wasteful number, since it uses less digits than its factorization.

121265830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732383.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 121265830 is about 11012.0765525853. The cubic root of 121265830 is about 494.9706883300.

It can be divided in two parts, 12126 and 5830, that added together give a square (17956 = 134²).

The spelling of 121265830 in words is "one hundred twenty-one million, two hundred sixty-five thousand, eight hundred thirty".