1260506421 has 16 divisors (see below), whose sum is σ = 1948609920. Its totient is φ = 803800800.

The previous prime is 1260506393. The next prime is 1260506447. The reversal of 1260506421 is 1246050621.

1260506421 is a `hidden beast` number, since 12 + 6 + 0 + 5 + 0 + 642 + 1 = 666.

It is not a de Polignac number, because 1260506421 - 2¹¹ = 1260504373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260507421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1014280 + ... + 1015521.

It is an arithmetic number, because the mean of its divisors is an integer number (121788120).

Almost surely, 2^1260506421 is an apocalyptic number.

It is an amenable number.

1260506421 is a deficient number, since it is larger than the sum of its proper divisors (688103499).

1260506421 is a wasteful number, since it uses less digits than its factorization.

1260506421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2029833 (or 2029827 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1260506421 is about 35503.6113796892. The cubic root of 1260506421 is about 1080.2269816133.

The spelling of 1260506421 in words is "one billion, two hundred sixty million, five hundred six thousand, four hundred twenty-one".