1230272137 has 4 divisors (see below), whose sum is σ = 1230476800. Its totient is φ = 1230067476.

The previous prime is 1230272119. The next prime is 1230272143. The reversal of 1230272137 is 7312720321.

It is a happy number.

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: 7312720321 = 61 ⋅119880661.

It is a cyclic number.

It is not a de Polignac number, because 1230272137 - 2¹⁵ = 1230239369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230272837) 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, 93033 + ... + 105430.

It is an arithmetic number, because the mean of its divisors is an integer number (307619200).

Almost surely, 2^1230272137 is an apocalyptic number.

It is an amenable number.

1230272137 is a deficient number, since it is larger than the sum of its proper divisors (204663).

1230272137 is an equidigital number, since it uses as much as digits as its factorization.

1230272137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204662.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 1230272137 is about 35075.2353805359. The cubic root of 1230272137 is about 1071.5202825123.

Adding to 1230272137 its reverse (7312720321), we get a palindrome (8542992458).

The spelling of 1230272137 in words is "one billion, two hundred thirty million, two hundred seventy-two thousand, one hundred thirty-seven".