42129146 has 8 divisors (see below), whose sum is σ = 65941344. Its totient is φ = 20148700.

The previous prime is 42129119. The next prime is 42129149. The reversal of 42129146 is 64192124.

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

It is not an unprimeable number, because it can be changed into a prime (42129149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457880 + ... + 457971.

It is an arithmetic number, because the mean of its divisors is an integer number (8242668).

Almost surely, 2^42129146 is an apocalyptic number.

42129146 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

42129146 is a deficient number, since it is larger than the sum of its proper divisors (23812198).

42129146 is a wasteful number, since it uses less digits than its factorization.

42129146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915876.

The product of its digits is 3456, while the sum is 29.

The square root of 42129146 is about 6490.6968809212. The cubic root of 42129146 is about 347.9585816299.

The spelling of 42129146 in words is "forty-two million, one hundred twenty-nine thousand, one hundred forty-six".