42129496 has 32 divisors (see below), whose sum is σ = 81982080. Its totient is φ = 20275200.

The previous prime is 42129463. The next prime is 42129497. The reversal of 42129496 is 69492124.

It is a happy number.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42129497) 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, 63406 + ... + 64066.

It is an arithmetic number, because the mean of its divisors is an integer number (2561940).

Almost surely, 2^42129496 is an apocalyptic number.

It is an amenable number.

42129496 is a deficient number, since it is larger than the sum of its proper divisors (39852584).

42129496 is a wasteful number, since it uses less digits than its factorization.

42129496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955 (or 951 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 42129496 is about 6490.7238425310. The cubic root of 42129496 is about 347.9595452159.

The spelling of 42129496 in words is "forty-two million, one hundred twenty-nine thousand, four hundred ninety-six".