420452526 has 64 divisors (see below), whose sum is σ = 927440640. Its totient is φ = 126282240.

The previous prime is 420452509. The next prime is 420452533. The reversal of 420452526 is 625254024.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 420452493 and 420452502.

It is a congruent number.

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, 970806 + ... + 971238.

It is an arithmetic number, because the mean of its divisors is an integer number (14491260).

Almost surely, 2^420452526 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420452526, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463720320).

420452526 is an abundant number, since it is smaller than the sum of its proper divisors (506988114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420452526 is a wasteful number, since it uses less digits than its factorization.

420452526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 420452526 is about 20504.9390635525. The cubic root of 420452526 is about 749.1561032516.

The spelling of 420452526 in words is "four hundred twenty million, four hundred fifty-two thousand, five hundred twenty-six".