420242331 has 16 divisors (see below), whose sum is σ = 563760000. Its totient is φ = 278449728.

The previous prime is 420242321. The next prime is 420242341. The reversal of 420242331 is 133242024.

It is an interprime number because it is at equal distance from previous prime (420242321) and next prime (420242341).

It is not a de Polignac number, because 420242331 - 2⁷ = 420242203 is a prime.

It is a super-2 number, since 2×420242331² = 353207233528627122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420242298 and 420242307.

It is not an unprimeable number, because it can be changed into a prime (420242321) 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, 519055 + ... + 519863.

It is an arithmetic number, because the mean of its divisors is an integer number (35235000).

Almost surely, 2^420242331 is an apocalyptic number.

420242331 is a deficient number, since it is larger than the sum of its proper divisors (143517669).

420242331 is a wasteful number, since it uses less digits than its factorization.

420242331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 420242331 is about 20499.8129503662. The cubic root of 420242331 is about 749.0312416596.

Adding to 420242331 its reverse (133242024), we get a palindrome (553484355).

The spelling of 420242331 in words is "four hundred twenty million, two hundred forty-two thousand, three hundred thirty-one".