145401242 has 8 divisors (see below), whose sum is σ = 249259296. Its totient is φ = 62314812.

The previous prime is 145401241. The next prime is 145401257. The reversal of 145401242 is 242104541.

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

It is a super-2 number, since 2×145401242² = 42283042350285128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145401241) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5192888 + ... + 5192915.

It is an arithmetic number, because the mean of its divisors is an integer number (31157412).

Almost surely, 2^145401242 is an apocalyptic number.

145401242 is a deficient number, since it is larger than the sum of its proper divisors (103858054).

145401242 is a wasteful number, since it uses less digits than its factorization.

145401242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10385812.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 145401242 is about 12058.2437361334. The cubic root of 145401242 is about 525.8429294829.

Adding to 145401242 its reverse (242104541), we get a palindrome (387505783).

The spelling of 145401242 in words is "one hundred forty-five million, four hundred one thousand, two hundred forty-two".