1127402561 has 2 divisors, whose sum is σ = 1127402562. Its totient is φ = 1127402560.

The previous prime is 1127402519. The next prime is 1127402567. The reversal of 1127402561 is 1652047211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 722588161 + 404814400 = 26881^2 + 20120^2 .

It is a cyclic number.

It is not a de Polignac number, because 1127402561 - 2²² = 1123208257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1127402567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563701280 + 563701281.

It is an arithmetic number, because the mean of its divisors is an integer number (563701281).

Almost surely, 2^1127402561 is an apocalyptic number.

It is an amenable number.

1127402561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1127402561 is an equidigital number, since it uses as much as digits as its factorization.

1127402561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1127402561 is about 33576.8158258046. The cubic root of 1127402561 is about 1040.7817596585.

Adding to 1127402561 its reverse (1652047211), we get a palindrome (2779449772).

The spelling of 1127402561 in words is "one billion, one hundred twenty-seven million, four hundred two thousand, five hundred sixty-one".