1220042015 has 16 divisors (see below), whose sum is σ = 1534078656. Its totient is φ = 929702400.

The previous prime is 1220041997. The next prime is 1220042023. The reversal of 1220042015 is 5102400221.

It is not a de Polignac number, because 1220042015 - 2⁸ = 1220041759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220041984 and 1220042002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5705 + ... + 49725.

It is an arithmetic number, because the mean of its divisors is an integer number (95879916).

Almost surely, 2^1220042015 is an apocalyptic number.

1220042015 is a deficient number, since it is larger than the sum of its proper divisors (314036641).

1220042015 is a wasteful number, since it uses less digits than its factorization.

1220042015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44290.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1220042015 is about 34929.0998309433. The cubic root of 1220042015 is about 1068.5419962039.

Adding to 1220042015 its reverse (5102400221), we get a palindrome (6322442236).

The spelling of 1220042015 in words is "one billion, two hundred twenty million, forty-two thousand, fifteen".