144202642 has 4 divisors (see below), whose sum is σ = 216303966. Its totient is φ = 72101320.

The previous prime is 144202613. The next prime is 144202657. The reversal of 144202642 is 246202441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 125462401 + 18740241 = 11201^2 + 4329^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36050659 + ... + 36050662.

Almost surely, 2^144202642 is an apocalyptic number.

144202642 is a deficient number, since it is larger than the sum of its proper divisors (72101324).

144202642 is an equidigital number, since it uses as much as digits as its factorization.

144202642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72101323.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 144202642 is about 12008.4404482847. The cubic root of 144202642 is about 524.3940303962.

The spelling of 144202642 in words is "one hundred forty-four million, two hundred two thousand, six hundred forty-two".