42319973 has 4 divisors (see below), whose sum is σ = 44547360. Its totient is φ = 40092588.

The previous prime is 42319951. The next prime is 42319993. The reversal of 42319973 is 37991324.

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 42319973 - 2¹² = 42315877 is a prime.

It is a super-2 number, since 2×42319973² = 3581960229441458, 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 (42319993) 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, 1113665 + ... + 1113702.

It is an arithmetic number, because the mean of its divisors is an integer number (11136840).

Almost surely, 2^42319973 is an apocalyptic number.

It is an amenable number.

42319973 is a deficient number, since it is larger than the sum of its proper divisors (2227387).

42319973 is a wasteful number, since it uses less digits than its factorization.

42319973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227386.

The product of its digits is 40824, while the sum is 38.

The square root of 42319973 is about 6505.3803117112. The cubic root of 42319973 is about 348.4831582054.

The spelling of 42319973 in words is "forty-two million, three hundred nineteen thousand, nine hundred seventy-three".