1421570020 has 24 divisors (see below), whose sum is σ = 3214935864. Its totient is φ = 524887296.

The previous prime is 1421569997. The next prime is 1421570077. The reversal of 1421570020 is 200751241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44863204 + 1376706816 = 6698^2 + 37104^2 .

It is a super-2 number, since 2×1421570020² = 4041722643525600800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1421569973 and 1421570000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2733529 + ... + 2734048.

It is an arithmetic number, because the mean of its divisors is an integer number (133955661).

Almost surely, 2^1421570020 is an apocalyptic number.

1421570020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421570020 is an abundant number, since it is smaller than the sum of its proper divisors (1793365844).

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

1421570020 is a wasteful number, since it uses less digits than its factorization.

1421570020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5467599 (or 5467597 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 1421570020 is about 37703.7136102003. The cubic root of 1421570020 is about 1124.4049580795.

The spelling of 1421570020 in words is "one billion, four hundred twenty-one million, five hundred seventy thousand, twenty".