1254291139 has 2 divisors, whose sum is σ = 1254291140. Its totient is φ = 1254291138.

The previous prime is 1254291133. The next prime is 1254291167. The reversal of 1254291139 is 9311924521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1254291139 - 2⁵ = 1254291107 is a prime.

It is a super-2 number, since 2×1254291139² = 3146492522747834642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1254291098 and 1254291107.

It is not a weakly prime, because it can be changed into another prime (1254291133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627145569 + 627145570.

It is an arithmetic number, because the mean of its divisors is an integer number (627145570).

Almost surely, 2^1254291139 is an apocalyptic number.

1254291139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254291139 is an equidigital number, since it uses as much as digits as its factorization.

1254291139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 37.

The square root of 1254291139 is about 35415.9729359508. The cubic root of 1254291139 is about 1078.4486009876.

The spelling of 1254291139 in words is "one billion, two hundred fifty-four million, two hundred ninety-one thousand, one hundred thirty-nine".