1301421240 has 96 divisors (see below), whose sum is σ = 4833859680. Its totient is φ = 297467136.

The previous prime is 1301421227. The next prime is 1301421263. The reversal of 1301421240 is 421241031.

1301421240 is a `hidden beast` number, since 1 + 3 + 0 + 1 + 421 + 240 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 255699 + ... + 260738.

It is an arithmetic number, because the mean of its divisors is an integer number (50352705).

Almost surely, 2^1301421240 is an apocalyptic number.

1301421240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1301421240 is an abundant number, since it is smaller than the sum of its proper divisors (3532438440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1301421240 is a wasteful number, since it uses less digits than its factorization.

1301421240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516461 (or 516454 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1301421240 is about 36075.2164234672. The cubic root of 1301421240 is about 1091.7904641637.

Adding to 1301421240 its reverse (421241031), we get a palindrome (1722662271).

The spelling of 1301421240 in words is "one billion, three hundred one million, four hundred twenty-one thousand, two hundred forty".