420503001 has 16 divisors (see below), whose sum is σ = 566774208. Its totient is φ = 277300800.

The previous prime is 420502993. The next prime is 420503009. The reversal of 420503001 is 100305024.

It is an interprime number because it is at equal distance from previous prime (420502993) and next prime (420503009).

It is not a de Polignac number, because 420503001 - 2³ = 420502993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420503009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105006 + ... + 108936.

It is an arithmetic number, because the mean of its divisors is an integer number (35423388).

Almost surely, 2^420503001 is an apocalyptic number.

It is an amenable number.

420503001 is a deficient number, since it is larger than the sum of its proper divisors (146271207).

420503001 is a wasteful number, since it uses less digits than its factorization.

420503001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4312.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 420503001 is about 20506.1698276397. The cubic root of 420503001 is about 749.1860805887.

Adding to 420503001 its reverse (100305024), we get a palindrome (520808025).

The spelling of 420503001 in words is "four hundred twenty million, five hundred three thousand, one".