42070542 has 32 divisors (see below), whose sum is σ = 88881408. Its totient is φ = 13248576.

The previous prime is 42070513. The next prime is 42070543. The reversal of 42070542 is 24507024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42070543) by changing a digit.

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, 9618 + ... + 13290.

It is an arithmetic number, because the mean of its divisors is an integer number (2777544).

Almost surely, 2^42070542 is an apocalyptic number.

42070542 is an abundant number, since it is smaller than the sum of its proper divisors (46810866).

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

42070542 is a wasteful number, since it uses less digits than its factorization.

42070542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3784.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 42070542 is about 6486.1808485425. The cubic root of 42070542 is about 347.7971634722.

Adding to 42070542 its reverse (24507024), we get a palindrome (66577566).

The spelling of 42070542 in words is "forty-two million, seventy thousand, five hundred forty-two".