42111534 has 16 divisors (see below), whose sum is σ = 86182272. Its totient is φ = 13710648.

The previous prime is 42111529. The next prime is 42111541. The reversal of 42111534 is 43511124.

It is a self number, because there is not a number n which added to its sum of digits gives 42111534.

It is a congruent number.

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, 81354 + ... + 81869.

It is an arithmetic number, because the mean of its divisors is an integer number (5386392).

Almost surely, 2^42111534 is an apocalyptic number.

42111534 is an abundant number, since it is smaller than the sum of its proper divisors (44070738).

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

42111534 is a wasteful number, since it uses less digits than its factorization.

42111534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163271.

The product of its digits is 480, while the sum is 21.

The square root of 42111534 is about 6489.3400280768. The cubic root of 42111534 is about 347.9100870896.

Adding to 42111534 its reverse (43511124), we get a palindrome (85622658).

The spelling of 42111534 in words is "forty-two million, one hundred eleven thousand, five hundred thirty-four".