1232142137 has 4 divisors (see below), whose sum is σ = 1233837696. Its totient is φ = 1230446580.

The previous prime is 1232142103. The next prime is 1232142161. The reversal of 1232142137 is 7312412321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7312412321 = 29 ⋅252152149.

It is a cyclic number.

It is not a de Polignac number, because 1232142137 - 2⁶ = 1232142073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232145137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846689 + ... + 848142.

It is an arithmetic number, because the mean of its divisors is an integer number (308459424).

Almost surely, 2^1232142137 is an apocalyptic number.

It is an amenable number.

1232142137 is a deficient number, since it is larger than the sum of its proper divisors (1695559).

1232142137 is an equidigital number, since it uses as much as digits as its factorization.

1232142137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695558.

The product of its digits is 2016, while the sum is 26.

The square root of 1232142137 is about 35101.8822429795. The cubic root of 1232142137 is about 1072.0629073247.

Adding to 1232142137 its reverse (7312412321), we get a palindrome (8544554458).

The spelling of 1232142137 in words is "one billion, two hundred thirty-two million, one hundred forty-two thousand, one hundred thirty-seven".