42147049 has 4 divisors (see below), whose sum is σ = 48168064. Its totient is φ = 36126036.

The previous prime is 42147043. The next prime is 42147067. The reversal of 42147049 is 94074124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42147049 - 2⁹ = 42146537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42147049.

It is not an unprimeable number, because it can be changed into a prime (42147043) 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, 3010497 + ... + 3010510.

It is an arithmetic number, because the mean of its divisors is an integer number (12042016).

Almost surely, 2^42147049 is an apocalyptic number.

It is an amenable number.

42147049 is a deficient number, since it is larger than the sum of its proper divisors (6021015).

42147049 is an equidigital number, since it uses as much as digits as its factorization.

42147049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6021014.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 42147049 is about 6492.0758621569. The cubic root of 42147049 is about 348.0078635868.

The spelling of 42147049 in words is "forty-two million, one hundred forty-seven thousand, forty-nine".