1295238421 has 8 divisors (see below), whose sum is σ = 1330155288. Its totient is φ = 1260480000.

The previous prime is 1295238403. The next prime is 1295238457. The reversal of 1295238421 is 1248325921.

It can be written as a sum of positive squares in 4 ways, for example, as 86285521 + 1208952900 = 9289^2 + 34770^2 .

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 1295238421 - 2⁷ = 1295238293 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 (1295233421) 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, 22950 + ... + 55831.

It is an arithmetic number, because the mean of its divisors is an integer number (166269411).

Almost surely, 2^1295238421 is an apocalyptic number.

It is an amenable number.

1295238421 is a deficient number, since it is larger than the sum of its proper divisors (34916867).

1295238421 is an equidigital number, since it uses as much as digits as its factorization.

1295238421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79223.

The product of its digits is 34560, while the sum is 37.

The square root of 1295238421 is about 35989.4209594986. The cubic root of 1295238421 is about 1090.0587519884.

The spelling of 1295238421 in words is "one billion, two hundred ninety-five million, two hundred thirty-eight thousand, four hundred twenty-one".