145243442 has 8 divisors (see below), whose sum is σ = 222500736. Its totient is φ = 71076532.

The previous prime is 145243411. The next prime is 145243447. The reversal of 145243442 is 244342541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (145243447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 772478 + ... + 772665.

It is an arithmetic number, because the mean of its divisors is an integer number (27812592).

Almost surely, 2^145243442 is an apocalyptic number.

145243442 is a deficient number, since it is larger than the sum of its proper divisors (77257294).

145243442 is a wasteful number, since it uses less digits than its factorization.

145243442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545192.

The product of its digits is 15360, while the sum is 29.

The square root of 145243442 is about 12051.6987184380. The cubic root of 145243442 is about 525.6526329646.

Adding to 145243442 its reverse (244342541), we get a palindrome (389585983).

Subtracting 145243442 from its reverse (244342541), we obtain a palindrome (99099099).

The spelling of 145243442 in words is "one hundred forty-five million, two hundred forty-three thousand, four hundred forty-two".