420403013 has 8 divisors (see below), whose sum is σ = 446145408. Its totient is φ = 394773184.

The previous prime is 420402967. The next prime is 420403021. The reversal of 420403013 is 310304024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 420403013 - 2⁸ = 420402757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 420402982 and 420403000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420403073) 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, 20381 + ... + 35442.

It is an arithmetic number, because the mean of its divisors is an integer number (55768176).

Almost surely, 2^420403013 is an apocalyptic number.

It is an amenable number.

420403013 is a deficient number, since it is larger than the sum of its proper divisors (25742395).

420403013 is a wasteful number, since it uses less digits than its factorization.

420403013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56283.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 420403013 is about 20503.7316847446. The cubic root of 420403013 is about 749.1266949197.

Adding to 420403013 its reverse (310304024), we get a palindrome (730707037).

The spelling of 420403013 in words is "four hundred twenty million, four hundred three thousand, thirteen".