42144550 has 24 divisors (see below), whose sum is σ = 89588016. Its totient is φ = 14449440.

The previous prime is 42144539. The next prime is 42144551. The reversal of 42144550 is 5544124.

It is a happy number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42144551) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59857 + ... + 60556.

It is an arithmetic number, because the mean of its divisors is an integer number (3732834).

Almost surely, 2^42144550 is an apocalyptic number.

42144550 is an abundant number, since it is smaller than the sum of its proper divisors (47443466).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42144550 is a wasteful number, since it uses less digits than its factorization.

42144550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120432 (or 120427 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 42144550 is about 6491.8833939004. The cubic root of 42144550 is about 348.0009853762. Note that the first 3 decimals are identical.

Adding to 42144550 its reverse (5544124), we get a palindrome (47688674).

The spelling of 42144550 in words is "forty-two million, one hundred forty-four thousand, five hundred fifty".