420375501 has 120 divisors (see below), whose sum is σ = 803525184. Its totient is φ = 214306560.

The previous prime is 420375499. The next prime is 420375539. The reversal of 420375501 is 105573024.

It is a happy number.

It is not a de Polignac number, because 420375501 - 2¹ = 420375499 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420375581) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 3928690 + ... + 3928796.

Almost surely, 2^420375501 is an apocalyptic number.

420375501 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

420375501 is a deficient number, since it is larger than the sum of its proper divisors (383149683).

420375501 is a wasteful number, since it uses less digits than its factorization.

420375501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 171 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 420375501 is about 20503.0607715043. The cubic root of 420375501 is about 749.1103531218.

The spelling of 420375501 in words is "four hundred twenty million, three hundred seventy-five thousand, five hundred one".