1254157339 has 8 divisors (see below), whose sum is σ = 1321712640. Its totient is φ = 1186756776.

The previous prime is 1254157309. The next prime is 1254157349. The reversal of 1254157339 is 9337514521.

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

It is a cyclic number.

It is not a de Polignac number, because 1254157339 - 2⁷ = 1254157211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1254157309) 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, 21847 + ... + 54640.

It is an arithmetic number, because the mean of its divisors is an integer number (165214080).

Almost surely, 2^1254157339 is an apocalyptic number.

1254157339 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1254157339 is a deficient number, since it is larger than the sum of its proper divisors (67555301).

1254157339 is an equidigital number, since it uses as much as digits as its factorization.

1254157339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77369.

The product of its digits is 113400, while the sum is 40.

The square root of 1254157339 is about 35414.0839073948. The cubic root of 1254157339 is about 1078.4102522211.

The spelling of 1254157339 in words is "one billion, two hundred fifty-four million, one hundred fifty-seven thousand, three hundred thirty-nine".