1272414157 has 8 divisors (see below), whose sum is σ = 1454513216. Its totient is φ = 1090396512.

The previous prime is 1272414107. The next prime is 1272414167. The reversal of 1272414157 is 7514142721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272414157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272414107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17953 + ... + 53545.

It is an arithmetic number, because the mean of its divisors is an integer number (181814152).

Almost surely, 2^1272414157 is an apocalyptic number.

It is an amenable number.

1272414157 is a deficient number, since it is larger than the sum of its proper divisors (182099059).

1272414157 is an equidigital number, since it uses as much as digits as its factorization.

1272414157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40707.

The product of its digits is 15680, while the sum is 34.

The square root of 1272414157 is about 35670.9147205395. The cubic root of 1272414157 is about 1083.6178843742.

Adding to 1272414157 its reverse (7514142721), we get a palindrome (8786556878).

The spelling of 1272414157 in words is "one billion, two hundred seventy-two million, four hundred fourteen thousand, one hundred fifty-seven".