1295628122 has 4 divisors (see below), whose sum is σ = 1943442186. Its totient is φ = 647814060.

The previous prime is 1295628119. The next prime is 1295628143. The reversal of 1295628122 is 2218265921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2218265921 = 37 ⋅59953133.

It can be written as a sum of positive squares in only one way, i.e., 1188111961 + 107516161 = 34469^2 + 10369^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323907029 + ... + 323907032.

Almost surely, 2^1295628122 is an apocalyptic number.

1295628122 is a deficient number, since it is larger than the sum of its proper divisors (647814064).

1295628122 is an equidigital number, since it uses as much as digits as its factorization.

1295628122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647814063.

The product of its digits is 34560, while the sum is 38.

The square root of 1295628122 is about 35994.8346572116. The cubic root of 1295628122 is about 1090.1680637524.

The spelling of 1295628122 in words is "one billion, two hundred ninety-five million, six hundred twenty-eight thousand, one hundred twenty-two".