42123494 has 16 divisors (see below), whose sum is σ = 76012800. Its totient is φ = 17102664.

The previous prime is 42123493. The next prime is 42123509. The reversal of 42123494 is 49432124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42123493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78914 + ... + 79445.

It is an arithmetic number, because the mean of its divisors is an integer number (4750800).

Almost surely, 2^42123494 is an apocalyptic number.

42123494 is a deficient number, since it is larger than the sum of its proper divisors (33889306).

42123494 is a wasteful number, since it uses less digits than its factorization.

42123494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158387.

The product of its digits is 6912, while the sum is 29.

The square root of 42123494 is about 6490.2614739315. The cubic root of 42123494 is about 347.9430203534.

The spelling of 42123494 in words is "forty-two million, one hundred twenty-three thousand, four hundred ninety-four".