1420125621 has 16 divisors (see below), whose sum is σ = 1966628160. Its totient is φ = 910448000.

The previous prime is 1420125589. The next prime is 1420125647. The reversal of 1420125621 is 1265210241.

It is a cyclic number.

It is not a de Polignac number, because 1420125621 - 2⁵ = 1420125589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1420125591 and 1420125600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420125661) 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, 10680 + ... + 54353.

It is an arithmetic number, because the mean of its divisors is an integer number (122914260).

Almost surely, 2^1420125621 is an apocalyptic number.

It is an amenable number.

1420125621 is a deficient number, since it is larger than the sum of its proper divisors (546502539).

1420125621 is a wasteful number, since it uses less digits than its factorization.

1420125621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65316.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1420125621 is about 37684.5541435745. The cubic root of 1420125621 is about 1124.0240084389.

Adding to 1420125621 its reverse (1265210241), we get a palindrome (2685335862).

The spelling of 1420125621 in words is "one billion, four hundred twenty million, one hundred twenty-five thousand, six hundred twenty-one".