420025634 has 64 divisors (see below), whose sum is σ = 773701632. Its totient is φ = 167227200.

The previous prime is 420025601. The next prime is 420025651. The reversal of 420025634 is 436520024.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1324844 + ... + 1325160.

It is an arithmetic number, because the mean of its divisors is an integer number (12089088).

Almost surely, 2^420025634 is an apocalyptic number.

420025634 is a deficient number, since it is larger than the sum of its proper divisors (353675998).

420025634 is a wasteful number, since it uses less digits than its factorization.

420025634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 420025634 is about 20494.5269279386. The cubic root of 420025634 is about 748.9024741067.

Adding to 420025634 its reverse (436520024), we get a palindrome (856545658).

The spelling of 420025634 in words is "four hundred twenty million, twenty-five thousand, six hundred thirty-four".