1242164755 has 16 divisors (see below), whose sum is σ = 1699687584. Its totient is φ = 863331840.

The previous prime is 1242164747. The next prime is 1242164773. The reversal of 1242164755 is 5574612421.

It is not a de Polignac number, because 1242164755 - 2³ = 1242164747 is a prime.

It is a Duffinian 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, 560961 + ... + 563170.

It is an arithmetic number, because the mean of its divisors is an integer number (106230474).

Almost surely, 2^1242164755 is an apocalyptic number.

1242164755 is a deficient number, since it is larger than the sum of its proper divisors (457522829).

1242164755 is a wasteful number, since it uses less digits than its factorization.

1242164755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124166.

The product of its digits is 67200, while the sum is 37.

The square root of 1242164755 is about 35244.3577753943. The cubic root of 1242164755 is about 1074.9618894007.

The spelling of 1242164755 in words is "one billion, two hundred forty-two million, one hundred sixty-four thousand, seven hundred fifty-five".