42011641 has 24 divisors (see below), whose sum is σ = 53737280. Its totient is φ = 32078592.

The previous prime is 42011621. The next prime is 42011663. The reversal of 42011641 is 14611024.

It is not a de Polignac number, because 42011641 - 2⁵ = 42011609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42011621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37891 + ... + 38983.

Almost surely, 2^42011641 is an apocalyptic number.

It is an amenable number.

42011641 is a deficient number, since it is larger than the sum of its proper divisors (11725639).

42011641 is a wasteful number, since it uses less digits than its factorization.

42011641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 42011641 is about 6481.6387588325. The cubic root of 42011641 is about 347.6347761460.

Adding to 42011641 its reverse (14611024), we get a palindrome (56622665).

The spelling of 42011641 in words is "forty-two million, eleven thousand, six hundred forty-one".