121563494 has 32 divisors (see below), whose sum is σ = 202245120. Its totient is φ = 54446112.

The previous prime is 121563457. The next prime is 121563509. The reversal of 121563494 is 494365121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253547 + ... + 254025.

It is an arithmetic number, because the mean of its divisors is an integer number (6320160).

Almost surely, 2^121563494 is an apocalyptic number.

121563494 is a deficient number, since it is larger than the sum of its proper divisors (80681626).

121563494 is a wasteful number, since it uses less digits than its factorization.

121563494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764.

The product of its digits is 25920, while the sum is 35.

The square root of 121563494 is about 11025.5836126710. The cubic root of 121563494 is about 495.3753490869.

The spelling of 121563494 in words is "one hundred twenty-one million, five hundred sixty-three thousand, four hundred ninety-four".