1072402161 has 32 divisors (see below), whose sum is σ = 1526169600. Its totient is φ = 667912320.

The previous prime is 1072402157. The next prime is 1072402187. The reversal of 1072402161 is 1612042701.

It is not a de Polignac number, because 1072402161 - 2² = 1072402157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1072422161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1491160 + ... + 1491878.

It is an arithmetic number, because the mean of its divisors is an integer number (47692800).

Almost surely, 2^1072402161 is an apocalyptic number.

It is an amenable number.

1072402161 is a deficient number, since it is larger than the sum of its proper divisors (453767439).

1072402161 is a wasteful number, since it uses less digits than its factorization.

1072402161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 1072402161 is about 32747.5519848431. The cubic root of 1072402161 is about 1023.5739553662.

Adding to 1072402161 its reverse (1612042701), we get a palindrome (2684444862).

The spelling of 1072402161 in words is "one billion, seventy-two million, four hundred two thousand, one hundred sixty-one".