42612220 has 24 divisors (see below), whose sum is σ = 102269664. Its totient is φ = 14609856.

The previous prime is 42612211. The next prime is 42612239. The reversal of 42612220 is 2221624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152047 + ... + 152326.

It is an arithmetic number, because the mean of its divisors is an integer number (4261236).

Almost surely, 2^42612220 is an apocalyptic number.

It is an amenable number.

42612220 is an abundant number, since it is smaller than the sum of its proper divisors (59657444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42612220 is a wasteful number, since it uses less digits than its factorization.

42612220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304389 (or 304387 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 42612220 is about 6527.8036122420. The cubic root of 42612220 is about 349.2834865490.

Adding to 42612220 its reverse (2221624), we get a palindrome (44833844).

The spelling of 42612220 in words is "forty-two million, six hundred twelve thousand, two hundred twenty".