42147069 has 4 divisors (see below), whose sum is σ = 56196096. Its totient is φ = 28098044.

The previous prime is 42147067. The next prime is 42147101. The reversal of 42147069 is 96074124.

It is a happy number.

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 42147069 - 2¹ = 42147067 is a prime.

It is a super-2 number, since 2×42147069² = 3552750850581522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42147067) 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, 7024509 + ... + 7024514.

It is an arithmetic number, because the mean of its divisors is an integer number (14049024).

Almost surely, 2^42147069 is an apocalyptic number.

It is an amenable number.

42147069 is a deficient number, since it is larger than the sum of its proper divisors (14049027).

42147069 is a wasteful number, since it uses less digits than its factorization.

42147069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14049026.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 42147069 is about 6492.0774024961. The cubic root of 42147069 is about 348.0079186334.

The spelling of 42147069 in words is "forty-two million, one hundred forty-seven thousand, sixty-nine".