42147099 has 6 divisors (see below), whose sum is σ = 60879156. Its totient is φ = 28098060.

The previous prime is 42147067. The next prime is 42147101. The reversal of 42147099 is 99074124.

It is not a de Polignac number, because 42147099 - 2⁵ = 42147067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42147019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2341497 + ... + 2341514.

It is an arithmetic number, because the mean of its divisors is an integer number (10146526).

Almost surely, 2^42147099 is an apocalyptic number.

42147099 is a deficient number, since it is larger than the sum of its proper divisors (18732057).

42147099 is a wasteful number, since it uses less digits than its factorization.

42147099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4683017 (or 4683014 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 42147099 is about 6492.0797130041. The cubic root of 42147099 is about 348.0080012033.

Subtracting 42147099 from its reverse (99074124), we obtain a square (56927025 = 7545²).

The spelling of 42147099 in words is "forty-two million, one hundred forty-seven thousand, ninety-nine".