1220854142 has 16 divisors (see below), whose sum is σ = 1839383232. Its totient is φ = 607733280.

The previous prime is 1220854123. The next prime is 1220854163. The reversal of 1220854142 is 2414580221.

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, 499748 + ... + 502184.

It is an arithmetic number, because the mean of its divisors is an integer number (114961452).

Almost surely, 2^1220854142 is an apocalyptic number.

1220854142 is a deficient number, since it is larger than the sum of its proper divisors (618529090).

1220854142 is a wasteful number, since it uses less digits than its factorization.

1220854142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3443.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 1220854142 is about 34940.7232609744. The cubic root of 1220854142 is about 1068.7790370370.

The spelling of 1220854142 in words is "one billion, two hundred twenty million, eight hundred fifty-four thousand, one hundred forty-two".