1270204421 has 2 divisors, whose sum is σ = 1270204422. Its totient is φ = 1270204420.

The previous prime is 1270204409. The next prime is 1270204433. The reversal of 1270204421 is 1244020721.

It is a balanced prime because it is at equal distance from previous prime (1270204409) and next prime (1270204433).

It can be written as a sum of positive squares in only one way, i.e., 693532225 + 576672196 = 26335^2 + 24014^2 .

It is an emirp because it is prime and its reverse (1244020721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1270204421 - 2⁶ = 1270204357 is a prime.

It is a super-3 number, since 3×1270204421³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1270204021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635102210 + 635102211.

It is an arithmetic number, because the mean of its divisors is an integer number (635102211).

Almost surely, 2^1270204421 is an apocalyptic number.

It is an amenable number.

1270204421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1270204421 is an equidigital number, since it uses as much as digits as its factorization.

1270204421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 1270204421 is about 35639.9273427991. The cubic root of 1270204421 is about 1082.9902331451.

The spelling of 1270204421 in words is "one billion, two hundred seventy million, two hundred four thousand, four hundred twenty-one".