42185043 has 16 divisors (see below), whose sum is σ = 63271200. Its totient is φ = 28121904.

The previous prime is 42184993. The next prime is 42185063. The reversal of 42185043 is 34058124.

It is not a de Polignac number, because 42185043 - 2¹² = 42180947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 42184998 and 42185016.

It is not an unprimeable number, because it can be changed into a prime (42185063) 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, 7458 + ... + 11831.

It is an arithmetic number, because the mean of its divisors is an integer number (3954450).

Almost surely, 2^42185043 is an apocalyptic number.

42185043 is a deficient number, since it is larger than the sum of its proper divisors (21086157).

42185043 is an frugal number, since it uses more digits than its factorization.

42185043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19310 (or 19292 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 42185043 is about 6495.0013856811. The cubic root of 42185043 is about 348.1124042364.

It can be divided in two parts, 4218 and 5043, that added together give a cube (9261 = 21³).

The spelling of 42185043 in words is "forty-two million, one hundred eighty-five thousand, forty-three".