1274502421 has 2 divisors, whose sum is σ = 1274502422. Its totient is φ = 1274502420.

The previous prime is 1274502419. The next prime is 1274502503. The reversal of 1274502421 is 1242054721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 740384100 + 534118321 = 27210^2 + 23111^2 .

It is a cyclic number.

It is not a de Polignac number, because 1274502421 - 2¹ = 1274502419 is a prime.

It is a super-2 number, since 2×1274502421² = 3248712842269722482, which contains 22 as substring.

Together with 1274502419, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1274502421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1274502221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637251210 + 637251211.

It is an arithmetic number, because the mean of its divisors is an integer number (637251211).

Almost surely, 2^1274502421 is an apocalyptic number.

It is an amenable number.

1274502421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1274502421 is an equidigital number, since it uses as much as digits as its factorization.

1274502421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 1274502421 is about 35700.1739631616. The cubic root of 1274502421 is about 1084.2103653154.

The spelling of 1274502421 in words is "one billion, two hundred seventy-four million, five hundred two thousand, four hundred twenty-one".