42250078 has 24 divisors (see below), whose sum is σ = 70203672. Its totient is φ = 18957024.

The previous prime is 42250073. The next prime is 42250093. The reversal of 42250078 is 87005224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42250073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35001 + ... + 36187.

It is an arithmetic number, because the mean of its divisors is an integer number (2925153).

Almost surely, 2^42250078 is an apocalyptic number.

42250078 is a deficient number, since it is larger than the sum of its proper divisors (27953594).

42250078 is a wasteful number, since it uses less digits than its factorization.

42250078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276 (or 1239 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 42250078 is about 6500.0059999972. The cubic root of 42250078 is about 348.2912027269.

The spelling of 42250078 in words is "forty-two million, two hundred fifty thousand, seventy-eight".