420542432 has 12 divisors (see below), whose sum is σ = 827942976. Its totient is φ = 210271200.

The previous prime is 420542429. The next prime is 420542449. The reversal of 420542432 is 234245024.

It is a happy number.

It is a super-2 number, since 2×420542432² = 353711874224949248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6570944 + ... + 6571007.

It is an arithmetic number, because the mean of its divisors is an integer number (68995248).

Almost surely, 2^420542432 is an apocalyptic number.

It is an amenable number.

420542432 is a deficient number, since it is larger than the sum of its proper divisors (407400544).

420542432 is a wasteful number, since it uses less digits than its factorization.

420542432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13141961 (or 13141953 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 420542432 is about 20507.1312474466. The cubic root of 420542432 is about 749.2094971738.

Adding to 420542432 its reverse (234245024), we get a palindrome (654787456).

The spelling of 420542432 in words is "four hundred twenty million, five hundred forty-two thousand, four hundred thirty-two".