420290097 has 4 divisors (see below), whose sum is σ = 560386800. Its totient is φ = 280193396.

The previous prime is 420290093. The next prime is 420290113. The reversal of 420290097 is 790092024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420290097 - 2² = 420290093 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420290093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70048347 + ... + 70048352.

It is an arithmetic number, because the mean of its divisors is an integer number (140096700).

Almost surely, 2^420290097 is an apocalyptic number.

It is an amenable number.

420290097 is a deficient number, since it is larger than the sum of its proper divisors (140096703).

420290097 is a wasteful number, since it uses less digits than its factorization.

420290097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140096702.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 420290097 is about 20500.9779522832. The cubic root of 420290097 is about 749.0596196280.

The spelling of 420290097 in words is "four hundred twenty million, two hundred ninety thousand, ninety-seven".