420140501 has 4 divisors (see below), whose sum is σ = 458335104. Its totient is φ = 381945900.

The previous prime is 420140491. The next prime is 420140519. The reversal of 420140501 is 105041024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420140501 - 2²² = 415946197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420140501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420140531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19097285 + ... + 19097306.

It is an arithmetic number, because the mean of its divisors is an integer number (114583776).

Almost surely, 2^420140501 is an apocalyptic number.

It is an amenable number.

420140501 is a deficient number, since it is larger than the sum of its proper divisors (38194603).

420140501 is a wasteful number, since it uses less digits than its factorization.

420140501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38194602.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 420140501 is about 20497.3291186925. The cubic root of 420140501 is about 748.9707368768.

Adding to 420140501 its reverse (105041024), we get a palindrome (525181525).

The spelling of 420140501 in words is "four hundred twenty million, one hundred forty thousand, five hundred one".