42247541 has 16 divisors (see below), whose sum is σ = 49251840. Its totient is φ = 35493120.

The previous prime is 42247511. The next prime is 42247547. The reversal of 42247541 is 14574224.

It is a de Polignac number, because none of the positive numbers 2^k-42247541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42247547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133115 + ... + 133431.

It is an arithmetic number, because the mean of its divisors is an integer number (3078240).

Almost surely, 2^42247541 is an apocalyptic number.

It is an amenable number.

42247541 is a deficient number, since it is larger than the sum of its proper divisors (7004299).

42247541 is a wasteful number, since it uses less digits than its factorization.

42247541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644.

The product of its digits is 8960, while the sum is 29.

The square root of 42247541 is about 6499.8108434015. The cubic root of 42247541 is about 348.2842312805.

The spelling of 42247541 in words is "forty-two million, two hundred forty-seven thousand, five hundred forty-one".