42994250 has 32 divisors (see below), whose sum is σ = 86682960. Its totient is φ = 15873600.

The previous prime is 42994247. The next prime is 42994271. The reversal of 42994250 is 5249924.

It is a Cunningham number, because it is equal to 6557²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 5331481 + 37662769 = 2309^2 + 6137^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42994250.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3365 + ... + 9864.

Almost surely, 2^42994250 is an apocalyptic number.

42994250 is an abundant number, since it is smaller than the sum of its proper divisors (43688710).

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

42994250 is a wasteful number, since it uses less digits than its factorization.

42994250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13259 (or 13249 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 42994250 is about 6557.0000762544. Note that the first 4 decimals coincide. The cubic root of 42994250 is about 350.3241894210.

The spelling of 42994250 in words is "forty-two million, nine hundred ninety-four thousand, two hundred fifty".