42019490 has 16 divisors (see below), whose sum is σ = 76145400. Its totient is φ = 16694400.

The previous prime is 42019489. The next prime is 42019493. The reversal of 42019490 is 9491024.

It can be written as a sum of positive squares in 4 ways, for example, as 28718881 + 13300609 = 5359^2 + 3647^2 .

It is not an unprimeable number, because it can be changed into a prime (42019493) 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, 12611 + ... + 15590.

Almost surely, 2^42019490 is an apocalyptic number.

42019490 is a deficient number, since it is larger than the sum of its proper divisors (34125910).

42019490 is a wasteful number, since it uses less digits than its factorization.

42019490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28357.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 42019490 is about 6482.2442101482. The cubic root of 42019490 is about 347.6564242368.

The spelling of 42019490 in words is "forty-two million, nineteen thousand, four hundred ninety".