42556141 has 4 divisors (see below), whose sum is σ = 44406432. Its totient is φ = 40705852.

The previous prime is 42556127. The next prime is 42556159. The reversal of 42556141 is 14165524.

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 42556141 - 2¹⁵ = 42523373 is a prime.

It is a super-2 number, since 2×42556141² = 3622050273623762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42556741) 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, 925111 + ... + 925156.

It is an arithmetic number, because the mean of its divisors is an integer number (11101608).

Almost surely, 2^42556141 is an apocalyptic number.

It is an amenable number.

42556141 is a deficient number, since it is larger than the sum of its proper divisors (1850291).

42556141 is a wasteful number, since it uses less digits than its factorization.

42556141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850290.

The product of its digits is 4800, while the sum is 28.

The square root of 42556141 is about 6523.5068023265. The cubic root of 42556141 is about 349.1301966594.

The spelling of 42556141 in words is "forty-two million, five hundred fifty-six thousand, one hundred forty-one".