145430242 has 16 divisors (see below), whose sum is σ = 228900672. Its totient is φ = 69165360.

The previous prime is 145430191. The next prime is 145430293. The reversal of 145430242 is 242034541.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (145430191) and next prime (145430293).

It is a super-2 number, since 2×145430242² = 42299910576357128, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408 + ... + 17059.

It is an arithmetic number, because the mean of its divisors is an integer number (14306292).

Almost surely, 2^145430242 is an apocalyptic number.

145430242 is a deficient number, since it is larger than the sum of its proper divisors (83470430).

145430242 is a wasteful number, since it uses less digits than its factorization.

145430242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17673.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 145430242 is about 12059.4461730214. The cubic root of 145430242 is about 525.8778866149.

Adding to 145430242 its reverse (242034541), we get a palindrome (387464783).

The spelling of 145430242 in words is "one hundred forty-five million, four hundred thirty thousand, two hundred forty-two".