420213550 has 24 divisors (see below), whose sum is σ = 792310896. Its totient is φ = 165781440.

The previous prime is 420213539. The next prime is 420213569. The reversal of 420213550 is 55312024.

It is a super-3 number, since 3×420213550³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53914 + ... + 61213.

It is an arithmetic number, because the mean of its divisors is an integer number (33012954).

Almost surely, 2^420213550 is an apocalyptic number.

420213550 is a deficient number, since it is larger than the sum of its proper divisors (372097346).

420213550 is a wasteful number, since it uses less digits than its factorization.

420213550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115212 (or 115207 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 420213550 is about 20499.1109563317. The cubic root of 420213550 is about 749.0141417161.

Adding to 420213550 its reverse (55312024), we get a palindrome (475525574).

The spelling of 420213550 in words is "four hundred twenty million, two hundred thirteen thousand, five hundred fifty".