42255550 has 12 divisors (see below), whose sum is σ = 78595416. Its totient is φ = 16902200.

The previous prime is 42255547. The next prime is 42255553. The reversal of 42255550 is 5555224.

It is an interprime number because it is at equal distance from previous prime (42255547) and next prime (42255553).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42255553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 422506 + ... + 422605.

It is an arithmetic number, because the mean of its divisors is an integer number (6549618).

Almost surely, 2^42255550 is an apocalyptic number.

42255550 is a deficient number, since it is larger than the sum of its proper divisors (36339866).

42255550 is a wasteful number, since it uses less digits than its factorization.

42255550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845123 (or 845118 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 42255550 is about 6500.4269090576. The cubic root of 42255550 is about 348.3062383377.

The spelling of 42255550 in words is "forty-two million, two hundred fifty-five thousand, five hundred fifty".