420245012 has 24 divisors (see below), whose sum is σ = 803325600. Its totient is φ = 190772960.

The previous prime is 420245009. The next prime is 420245017. The reversal of 420245012 is 210542024.

It is a happy number.

It is a super-2 number, since 2×420245012² = 353211740221760288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420245017) 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, 30614 + ... + 42162.

It is an arithmetic number, because the mean of its divisors is an integer number (33471900).

Almost surely, 2^420245012 is an apocalyptic number.

It is an amenable number.

420245012 is a deficient number, since it is larger than the sum of its proper divisors (383080588).

420245012 is a wasteful number, since it uses less digits than its factorization.

420245012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12391 (or 12389 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 420245012 is about 20499.8783411024. The cubic root of 420245012 is about 749.0328345092.

Adding to 420245012 its reverse (210542024), we get a palindrome (630787036).

The spelling of 420245012 in words is "four hundred twenty million, two hundred forty-five thousand, twelve".