42098723 has 4 divisors (see below), whose sum is σ = 42788928. Its totient is φ = 41408520.

The previous prime is 42098701. The next prime is 42098741. The reversal of 42098723 is 32789024.

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 42098723 - 2⁶ = 42098659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42098773) 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, 345011 + ... + 345132.

It is an arithmetic number, because the mean of its divisors is an integer number (10697232).

Almost surely, 2^42098723 is an apocalyptic number.

42098723 is a deficient number, since it is larger than the sum of its proper divisors (690205).

42098723 is an equidigital number, since it uses as much as digits as its factorization.

42098723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690204.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 42098723 is about 6488.3528726480. The cubic root of 42098723 is about 347.8748035797.

The spelling of 42098723 in words is "forty-two million, ninety-eight thousand, seven hundred twenty-three".