1127402161 has 2 divisors, whose sum is σ = 1127402162. Its totient is φ = 1127402160.

The previous prime is 1127402153. The next prime is 1127402303. The reversal of 1127402161 is 1612047211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 753173136 + 374229025 = 27444^2 + 19345^2 .

It is an emirp because it is prime and its reverse (1612047211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1127402161 - 2³ = 1127402153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1127402561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563701080 + 563701081.

It is an arithmetic number, because the mean of its divisors is an integer number (563701081).

Almost surely, 2^1127402161 is an apocalyptic number.

It is an amenable number.

1127402161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1127402161 is an equidigital number, since it uses as much as digits as its factorization.

1127402161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 1127402161 is about 33576.8098693131. The cubic root of 1127402161 is about 1040.7816365695.

Adding to 1127402161 its reverse (1612047211), we get a palindrome (2739449372).

The spelling of 1127402161 in words is "one billion, one hundred twenty-seven million, four hundred two thousand, one hundred sixty-one".