42917490 has 144 divisors (see below), whose sum is σ = 140422464. Its totient is φ = 8902080.

The previous prime is 42917467. The next prime is 42917507. The reversal of 42917490 is 9471924.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 75949 + ... + 76511.

It is an arithmetic number, because the mean of its divisors is an integer number (975156).

Almost surely, 2^42917490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42917490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70211232).

42917490 is an abundant number, since it is smaller than the sum of its proper divisors (97504974).

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

42917490 is a wasteful number, since it uses less digits than its factorization.

42917490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 42917490 is about 6551.1441748751. The cubic root of 42917490 is about 350.1155808750.

It can be divided in two parts, 4291 and 7490, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 42917490 in words is "forty-two million, nine hundred seventeen thousand, four hundred ninety".