1378150421 has 8 divisors (see below), whose sum is σ = 1390516800. Its totient is φ = 1365838848.

The previous prime is 1378150393. The next prime is 1378150457. The reversal of 1378150421 is 1240518731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1378150421 - 2⁶ = 1378150357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378152421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37670 + ... + 64616.

It is an arithmetic number, because the mean of its divisors is an integer number (173814600).

Almost surely, 2^1378150421 is an apocalyptic number.

It is an amenable number.

1378150421 is a deficient number, since it is larger than the sum of its proper divisors (12366379).

1378150421 is a wasteful number, since it uses less digits than its factorization.

1378150421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27403.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1378150421 is about 37123.4483985526. The cubic root of 1378150421 is about 1112.8386670142.

The spelling of 1378150421 in words is "one billion, three hundred seventy-eight million, one hundred fifty thousand, four hundred twenty-one".