42950123 has 4 divisors (see below), whose sum is σ = 42979848. Its totient is φ = 42920400.

The previous prime is 42950119. The next prime is 42950129. The reversal of 42950123 is 32105924.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42950123 - 2² = 42950119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42950092 and 42950101.

It is not an unprimeable number, because it can be changed into a prime (42950129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12578 + ... + 15623.

It is an arithmetic number, because the mean of its divisors is an integer number (10744962).

Almost surely, 2^42950123 is an apocalyptic number.

42950123 is a deficient number, since it is larger than the sum of its proper divisors (29725).

42950123 is a wasteful number, since it uses less digits than its factorization.

42950123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29724.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 42950123 is about 6553.6343352372. The cubic root of 42950123 is about 350.2042970539.

The spelling of 42950123 in words is "forty-two million, nine hundred fifty thousand, one hundred twenty-three".