1370020421 has 16 divisors (see below), whose sum is σ = 1712692608. Its totient is φ = 1064664000.

The previous prime is 1370020397. The next prime is 1370020439. The reversal of 1370020421 is 1240200731.

It is a cyclic number.

It is not a de Polignac number, because 1370020421 - 2⁶ = 1370020357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1370020393 and 1370020402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1370020321) 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, 4871 + ... + 52571.

It is an arithmetic number, because the mean of its divisors is an integer number (107043288).

Almost surely, 2^1370020421 is an apocalyptic number.

1370020421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1370020421 is a deficient number, since it is larger than the sum of its proper divisors (342672187).

1370020421 is a wasteful number, since it uses less digits than its factorization.

1370020421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48092.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 1370020421 is about 37013.7869043415. The cubic root of 1370020421 is about 1110.6460597924.

The spelling of 1370020421 in words is "one billion, three hundred seventy million, twenty thousand, four hundred twenty-one".