121356590 has 16 divisors (see below), whose sum is σ = 225974880. Its totient is φ = 46868640.

The previous prime is 121356589. The next prime is 121356593. The reversal of 121356590 is 95653121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121356593) 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, 208946 + ... + 209525.

It is an arithmetic number, because the mean of its divisors is an integer number (14123430).

Almost surely, 2^121356590 is an apocalyptic number.

121356590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121356590 is a deficient number, since it is larger than the sum of its proper divisors (104618290).

121356590 is a wasteful number, since it uses less digits than its factorization.

121356590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418507.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 121356590 is about 11016.1967121144. The cubic root of 121356590 is about 495.0941425540.

The spelling of 121356590 in words is "one hundred twenty-one million, three hundred fifty-six thousand, five hundred ninety".