42140434 has 16 divisors (see below), whose sum is σ = 72453888. Its totient is φ = 18006912.

The previous prime is 42140419. The next prime is 42140443. The reversal of 42140434 is 43404124.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 679 + ... + 9205.

It is an arithmetic number, because the mean of its divisors is an integer number (4528368).

Almost surely, 2^42140434 is an apocalyptic number.

42140434 is a deficient number, since it is larger than the sum of its proper divisors (30313454).

42140434 is a wasteful number, since it uses less digits than its factorization.

42140434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8889.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 42140434 is about 6491.5663749206. The cubic root of 42140434 is about 347.9896559659.

Adding to 42140434 its reverse (43404124), we get a palindrome (85544558).

The spelling of 42140434 in words is "forty-two million, one hundred forty thousand, four hundred thirty-four".