144455442 has 32 divisors (see below), whose sum is σ = 309117120. Its totient is φ = 44867520.

The previous prime is 144455419. The next prime is 144455449. The reversal of 144455442 is 244554441.

It is not an unprimeable number, because it can be changed into a prime (144455449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3433 + ... + 17340.

It is an arithmetic number, because the mean of its divisors is an integer number (9659910).

Almost surely, 2^144455442 is an apocalyptic number.

144455442 is an abundant number, since it is smaller than the sum of its proper divisors (164661678).

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

144455442 is a wasteful number, since it uses less digits than its factorization.

144455442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20858.

The product of its digits is 51200, while the sum is 33.

The square root of 144455442 is about 12018.9617688052. The cubic root of 144455442 is about 524.7002878898.

The spelling of 144455442 in words is "one hundred forty-four million, four hundred fifty-five thousand, four hundred forty-two".