42729526 has 16 divisors (see below), whose sum is σ = 73925280. Its totient is φ = 18144000.

The previous prime is 42729509. The next prime is 42729553. The reversal of 42729526 is 62592724.

It is a happy number.

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, 12475 + ... + 15526.

It is an arithmetic number, because the mean of its divisors is an integer number (4620330).

Almost surely, 2^42729526 is an apocalyptic number.

42729526 is a deficient number, since it is larger than the sum of its proper divisors (31195754).

42729526 is a wasteful number, since it uses less digits than its factorization.

42729526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28119.

The product of its digits is 60480, while the sum is 37.

The square root of 42729526 is about 6536.7825418932. The cubic root of 42729526 is about 349.6037038342.

The spelling of 42729526 in words is "forty-two million, seven hundred twenty-nine thousand, five hundred twenty-six".