1220142015 has 32 divisors (see below), whose sum is σ = 2173997760. Its totient is φ = 649285632.

The previous prime is 1220141983. The next prime is 1220142023. The reversal of 1220142015 is 5102410221.

It is not a de Polignac number, because 1220142015 - 2⁵ = 1220141983 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51807 + ... + 71583.

It is an arithmetic number, because the mean of its divisors is an integer number (67937430).

Almost surely, 2^1220142015 is an apocalyptic number.

1220142015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220142015 is a deficient number, since it is larger than the sum of its proper divisors (953855745).

1220142015 is a wasteful number, since it uses less digits than its factorization.

1220142015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20248 (or 20242 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1220142015 is about 34930.5312727992. The cubic root of 1220142015 is about 1068.5711895374.

Adding to 1220142015 its reverse (5102410221), we get a palindrome (6322552236).

The spelling of 1220142015 in words is "one billion, two hundred twenty million, one hundred forty-two thousand, fifteen".