145202042 has 4 divisors (see below), whose sum is σ = 217803066. Its totient is φ = 72601020.

The previous prime is 145202027. The next prime is 145202063. The reversal of 145202042 is 240202541.

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., 136913401 + 8288641 = 11701^2 + 2879^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36300509 + ... + 36300512.

Almost surely, 2^145202042 is an apocalyptic number.

145202042 is a deficient number, since it is larger than the sum of its proper divisors (72601024).

145202042 is an equidigital number, since it uses as much as digits as its factorization.

145202042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72601023.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 145202042 is about 12049.9809958356. The cubic root of 145202042 is about 525.6026844398.

Adding to 145202042 its reverse (240202541), we get a palindrome (385404583).

The spelling of 145202042 in words is "one hundred forty-five million, two hundred two thousand, forty-two".