1162072421 has 2 divisors, whose sum is σ = 1162072422. Its totient is φ = 1162072420.

The previous prime is 1162072411. The next prime is 1162072441. The reversal of 1162072421 is 1242702611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 820192321 + 341880100 = 28639^2 + 18490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1162072421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1162072411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581036210 + 581036211.

It is an arithmetic number, because the mean of its divisors is an integer number (581036211).

Almost surely, 2^1162072421 is an apocalyptic number.

It is an amenable number.

1162072421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1162072421 is an equidigital number, since it uses as much as digits as its factorization.

1162072421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1162072421 is about 34089.1833431075. The cubic root of 1162072421 is about 1051.3429290051.

The spelling of 1162072421 in words is "one billion, one hundred sixty-two million, seventy-two thousand, four hundred twenty-one".