1260038421 has 6 divisors (see below), whose sum is σ = 1820055510. Its totient is φ = 840025608.

The previous prime is 1260038399. The next prime is 1260038467. The reversal of 1260038421 is 1248300621.

1260038421 is a `hidden beast` number, since 1 + 2 + 600 + 38 + 4 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1246796100 + 13242321 = 35310^2 + 3639^2 .

It is not a de Polignac number, because 1260038421 - 2¹¹ = 1260036373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260039421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70002126 + ... + 70002143.

It is an arithmetic number, because the mean of its divisors is an integer number (303342585).

Almost surely, 2^1260038421 is an apocalyptic number.

It is an amenable number.

1260038421 is a deficient number, since it is larger than the sum of its proper divisors (560017089).

1260038421 is a wasteful number, since it uses less digits than its factorization.

1260038421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140004275 (or 140004272 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1260038421 is about 35497.0198889991. The cubic root of 1260038421 is about 1080.0932764088.

The spelling of 1260038421 in words is "one billion, two hundred sixty million, thirty-eight thousand, four hundred twenty-one".