1420453921 has 8 divisors (see below), whose sum is σ = 1504462464. Its totient is φ = 1336495680.

The previous prime is 1420453913. The next prime is 1420453961. The reversal of 1420453921 is 1293540241.

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 1420453921 - 2³ = 1420453913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1420453961) 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, 56436 + ... + 77626.

It is an arithmetic number, because the mean of its divisors is an integer number (188057808).

Almost surely, 2^1420453921 is an apocalyptic number.

It is an amenable number.

1420453921 is a deficient number, since it is larger than the sum of its proper divisors (84008543).

1420453921 is a wasteful number, since it uses less digits than its factorization.

1420453921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25151.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1420453921 is about 37688.9097878938. The cubic root of 1420453921 is about 1124.1106178308.

The spelling of 1420453921 in words is "one billion, four hundred twenty million, four hundred fifty-three thousand, nine hundred twenty-one".