42001955 has 8 divisors (see below), whose sum is σ = 50681904. Its totient is φ = 33415200.

The previous prime is 42001903. The next prime is 42001957. The reversal of 42001955 is 55910024.

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

It is not a de Polignac number, because 42001955 - 2⁶ = 42001891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42001957) 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, 22301 + ... + 24110.

It is an arithmetic number, because the mean of its divisors is an integer number (6335238).

Almost surely, 2^42001955 is an apocalyptic number.

42001955 is a deficient number, since it is larger than the sum of its proper divisors (8679949).

42001955 is a wasteful number, since it uses less digits than its factorization.

42001955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46597.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 42001955 is about 6480.8915281773. The cubic root of 42001955 is about 347.6080577638.

Adding to 42001955 its reverse (55910024), we get a palindrome (97911979).

The spelling of 42001955 in words is "forty-two million, one thousand, nine hundred fifty-five".