42729670 has 32 divisors (see below), whose sum is σ = 85730400. Its totient is φ = 15238656.

The previous prime is 42729641. The next prime is 42729683. The reversal of 42729670 is 7692724.

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 15 ways as a sum of consecutive naturals, for example, 3385 + ... + 9844.

It is an arithmetic number, because the mean of its divisors is an integer number (2679075).

Almost surely, 2^42729670 is an apocalyptic number.

42729670 is an abundant number, since it is smaller than the sum of its proper divisors (43000730).

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

42729670 is a wasteful number, since it uses less digits than its factorization.

42729670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13272.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 42729670 is about 6536.7935564771. The cubic root of 42729670 is about 349.6040965593.

The spelling of 42729670 in words is "forty-two million, seven hundred twenty-nine thousand, six hundred seventy".