1380332421 has 40 divisors (see below), whose sum is σ = 2241527904. Its totient is φ = 841428000.

The previous prime is 1380332389. The next prime is 1380332423. The reversal of 1380332421 is 1242330831.

It is not a de Polignac number, because 1380332421 - 2⁵ = 1380332389 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 (1380332423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 106546 + ... + 118796.

Almost surely, 2^1380332421 is an apocalyptic number.

It is an amenable number.

1380332421 is a deficient number, since it is larger than the sum of its proper divisors (861195483).

1380332421 is a wasteful number, since it uses less digits than its factorization.

1380332421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12383 (or 12374 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1380332421 is about 37152.8252088586. The cubic root of 1380332421 is about 1113.4256696000.

The spelling of 1380332421 in words is "one billion, three hundred eighty million, three hundred thirty-two thousand, four hundred twenty-one".