42145250 has 32 divisors (see below), whose sum is σ = 90170496. Its totient is φ = 14449200.

The previous prime is 42145247. The next prime is 42145277. The reversal of 42145250 is 5254124.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10292 + ... + 13791.

It is an arithmetic number, because the mean of its divisors is an integer number (2817828).

Almost surely, 2^42145250 is an apocalyptic number.

42145250 is an abundant number, since it is smaller than the sum of its proper divisors (48025246).

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

42145250 is a wasteful number, since it uses less digits than its factorization.

42145250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24107 (or 24097 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 42145250 is about 6491.9373071526. The cubic root of 42145250 is about 348.0029120732.

Adding to 42145250 its reverse (5254124), we get a palindrome (47399374).

The spelling of 42145250 in words is "forty-two million, one hundred forty-five thousand, two hundred fifty".