1420685400 has 48 divisors (see below), whose sum is σ = 4404126600. Its totient is φ = 378849280.

The previous prime is 1420685389. The next prime is 1420685407. The reversal of 1420685400 is 45860241.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420685407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1183305 + ... + 1184504.

Almost surely, 2^1420685400 is an apocalyptic number.

1420685400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1420685400 is an abundant number, since it is smaller than the sum of its proper divisors (2983441200).

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

1420685400 is a wasteful number, since it uses less digits than its factorization.

1420685400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2367828 (or 2367819 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 1420685400 is about 37691.9805794283. The cubic root of 1420685400 is about 1124.1716766854.

The spelling of 1420685400 in words is "one billion, four hundred twenty million, six hundred eighty-five thousand, four hundred".