42955919 has 8 divisors (see below), whose sum is σ = 43488720. Its totient is φ = 42425856.

The previous prime is 42955897. The next prime is 42955921. The reversal of 42955919 is 91955924.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42955919 - 2¹⁶ = 42890383 is a prime.

It is a super-2 number, since 2×42955919² = 3690421954269122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42955919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42957919) 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, 62552 + ... + 63234.

It is an arithmetic number, because the mean of its divisors is an integer number (5436090).

Almost surely, 2^42955919 is an apocalyptic number.

42955919 is a deficient number, since it is larger than the sum of its proper divisors (532801).

42955919 is a wasteful number, since it uses less digits than its factorization.

42955919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369.

The product of its digits is 145800, while the sum is 44.

The square root of 42955919 is about 6554.0765177102. The cubic root of 42955919 is about 350.2200493783.

The spelling of 42955919 in words is "forty-two million, nine hundred fifty-five thousand, nine hundred nineteen".