420251003 has 2 divisors, whose sum is σ = 420251004. Its totient is φ = 420251002.

The previous prime is 420250993. The next prime is 420251023. The reversal of 420251003 is 300152024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420251003 - 2²⁴ = 403473787 is a prime.

It is a super-2 number, since 2×420251003² = 353221811045012018, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420251023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210125501 + 210125502.

It is an arithmetic number, because the mean of its divisors is an integer number (210125502).

Almost surely, 2^420251003 is an apocalyptic number.

420251003 is a deficient number, since it is larger than the sum of its proper divisors (1).

420251003 is an equidigital number, since it uses as much as digits as its factorization.

420251003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 420251003 is about 20500.0244634000. The cubic root of 420251003 is about 749.0363938886.

The spelling of 420251003 in words is "four hundred twenty million, two hundred fifty-one thousand, three".