42159490 has 16 divisors (see below), whose sum is σ = 80351352. Its totient is φ = 15871744.

The previous prime is 42159463. The next prime is 42159497. The reversal of 42159490 is 9495124.

It can be written as a sum of positive squares in 4 ways, for example, as 32936121 + 9223369 = 5739^2 + 3037^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (42159497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123829 + ... + 124168.

Almost surely, 2^42159490 is an apocalyptic number.

42159490 is a deficient number, since it is larger than the sum of its proper divisors (38191862).

42159490 is a wasteful number, since it uses less digits than its factorization.

42159490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248021.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 42159490 is about 6493.0339595600. The cubic root of 42159490 is about 348.0421019657.

The spelling of 42159490 in words is "forty-two million, one hundred fifty-nine thousand, four hundred ninety".