1423121137 has 2 divisors, whose sum is σ = 1423121138. Its totient is φ = 1423121136.

The previous prime is 1423121099. The next prime is 1423121171. The reversal of 1423121137 is 7311213241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1031437456 + 391683681 = 32116^2 + 19791^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423121137 is a prime.

It is a super-3 number, since 3×1423121137³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2423121137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711560568 + 711560569.

It is an arithmetic number, because the mean of its divisors is an integer number (711560569).

Almost surely, 2^1423121137 is an apocalyptic number.

It is an amenable number.

1423121137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423121137 is an equidigital number, since it uses as much as digits as its factorization.

1423121137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 1423121137 is about 37724.2778194626. The cubic root of 1423121137 is about 1124.8137665716.

Adding to 1423121137 its reverse (7311213241), we get a palindrome (8734334378).

The spelling of 1423121137 in words is "one billion, four hundred twenty-three million, one hundred twenty-one thousand, one hundred thirty-seven".