1220685124 has 6 divisors (see below), whose sum is σ = 2136198974. Its totient is φ = 610342560.

The previous prime is 1220685113. The next prime is 1220685131. The reversal of 1220685124 is 4215860221.

It can be written as a sum of positive squares in only one way, i.e., 793436224 + 427248900 = 28168^2 + 20670^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152585637 + ... + 152585644.

Almost surely, 2^1220685124 is an apocalyptic number.

It is an amenable number.

1220685124 is a deficient number, since it is larger than the sum of its proper divisors (915513850).

1220685124 is a wasteful number, since it uses less digits than its factorization.

1220685124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305171285 (or 305171283 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 1220685124 is about 34938.3045381427. The cubic root of 1220685124 is about 1068.7297133092.

The spelling of 1220685124 in words is "one billion, two hundred twenty million, six hundred eighty-five thousand, one hundred twenty-four".