42273547 has 4 divisors (see below), whose sum is σ = 42298560. Its totient is φ = 42248536.

The previous prime is 42273541. The next prime is 42273557. The reversal of 42273547 is 74537224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42273547 is a prime.

It is a super-2 number, since 2×42273547² = 3574105551922418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42273541) 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, 9772 + ... + 13417.

It is an arithmetic number, because the mean of its divisors is an integer number (10574640).

Almost surely, 2^42273547 is an apocalyptic number.

42273547 is a deficient number, since it is larger than the sum of its proper divisors (25013).

42273547 is a wasteful number, since it uses less digits than its factorization.

42273547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25012.

The product of its digits is 47040, while the sum is 34.

The square root of 42273547 is about 6501.8110553906. The cubic root of 42273547 is about 348.3556801874.

The spelling of 42273547 in words is "forty-two million, two hundred seventy-three thousand, five hundred forty-seven".