42529399 has 8 divisors (see below), whose sum is σ = 47995920. Its totient is φ = 37329600.

The previous prime is 42529381. The next prime is 42529439. The reversal of 42529399 is 99392524.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42529399 - 2¹⁵ = 42496631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42529339) 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, 66342 + ... + 66979.

It is an arithmetic number, because the mean of its divisors is an integer number (5999490).

Almost surely, 2^42529399 is an apocalyptic number.

42529399 is a deficient number, since it is larger than the sum of its proper divisors (5466521).

42529399 is a wasteful number, since it uses less digits than its factorization.

42529399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133361.

The product of its digits is 174960, while the sum is 43.

The square root of 42529399 is about 6521.4568157736. The cubic root of 42529399 is about 349.0570509602.

The spelling of 42529399 in words is "forty-two million, five hundred twenty-nine thousand, three hundred ninety-nine".