420042131 has 16 divisors (see below), whose sum is σ = 433090560. Its totient is φ = 407272320.

The previous prime is 420042127. The next prime is 420042193. The reversal of 420042131 is 131240024.

It is a cyclic number.

It is not a de Polignac number, because 420042131 - 2² = 420042127 is a prime.

It is a super-2 number, since 2×420042131² = 352870783630042322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420042121) 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 15 ways as a sum of consecutive naturals, for example, 1883486 + ... + 1883708.

It is an arithmetic number, because the mean of its divisors is an integer number (27068160).

Almost surely, 2^420042131 is an apocalyptic number.

420042131 is a deficient number, since it is larger than the sum of its proper divisors (13048429).

420042131 is a wasteful number, since it uses less digits than its factorization.

420042131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 420042131 is about 20494.9293972924. The cubic root of 420042131 is about 748.9122786531.

Adding to 420042131 its reverse (131240024), we get a palindrome (551282155).

The spelling of 420042131 in words is "four hundred twenty million, forty-two thousand, one hundred thirty-one".