420540366 has 16 divisors (see below), whose sum is σ = 849409488. Its totient is φ = 138792000.

The previous prime is 420540361. The next prime is 420540383. The reversal of 420540366 is 663045024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420540361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346375 + ... + 347586.

It is an arithmetic number, because the mean of its divisors is an integer number (53088093).

Almost surely, 2^420540366 is an apocalyptic number.

420540366 is an abundant number, since it is smaller than the sum of its proper divisors (428869122).

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

420540366 is a wasteful number, since it uses less digits than its factorization.

420540366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694067.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 420540366 is about 20507.0808746638. The cubic root of 420540366 is about 749.2082702906.

The spelling of 420540366 in words is "four hundred twenty million, five hundred forty thousand, three hundred sixty-six".