1072144755 has 80 divisors (see below), whose sum is σ = 2132697600. Its totient is φ = 510891840.

The previous prime is 1072144751. The next prime is 1072144807. The reversal of 1072144755 is 5574412701.

It is not a de Polignac number, because 1072144755 - 2² = 1072144751 is a prime.

It is a super-2 number, since 2×1072144755² = 2298988751348020050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1072144751) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 260806 + ... + 264884.

It is an arithmetic number, because the mean of its divisors is an integer number (26658720).

Almost surely, 2^1072144755 is an apocalyptic number.

1072144755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1072144755 is a deficient number, since it is larger than the sum of its proper divisors (1060552845).

1072144755 is a wasteful number, since it uses less digits than its factorization.

1072144755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4166 (or 4157 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 1072144755 is about 32743.6215926095. The cubic root of 1072144755 is about 1023.4920535169.

The spelling of 1072144755 in words is "one billion, seventy-two million, one hundred forty-four thousand, seven hundred fifty-five".