145024442 has 4 divisors (see below), whose sum is σ = 217536666. Its totient is φ = 72512220.

The previous prime is 145024427. The next prime is 145024459. The reversal of 145024442 is 244420541.

145024442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 75151561 + 69872881 = 8669^2 + 8359^2 .

It is a super-2 number, since 2×145024442² = 42064177554822728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36256109 + ... + 36256112.

Almost surely, 2^145024442 is an apocalyptic number.

145024442 is a deficient number, since it is larger than the sum of its proper divisors (72512224).

145024442 is an equidigital number, since it uses as much as digits as its factorization.

145024442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72512223.

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 145024442 is about 12042.6094348360. The cubic root of 145024442 is about 525.3883047160.

Adding to 145024442 its reverse (244420541), we get a palindrome (389444983).

The spelling of 145024442 in words is "one hundred forty-five million, twenty-four thousand, four hundred forty-two".