145425242 has 16 divisors (see below), whose sum is σ = 234420480. Its totient is φ = 67412928.

The previous prime is 145425239. The next prime is 145425257. The reversal of 145425242 is 242524541.

It is a super-2 number, since 2×145425242² = 42297002021517128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29642 + ... + 34197.

It is an arithmetic number, because the mean of its divisors is an integer number (14651280).

Almost surely, 2^145425242 is an apocalyptic number.

145425242 is a deficient number, since it is larger than the sum of its proper divisors (88995238).

145425242 is a wasteful number, since it uses less digits than its factorization.

145425242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63925.

The product of its digits is 12800, while the sum is 29.

The square root of 145425242 is about 12059.2388648704. The cubic root of 145425242 is about 525.8718598547.

Adding to 145425242 its reverse (242524541), we get a palindrome (387949783).

The spelling of 145425242 in words is "one hundred forty-five million, four hundred twenty-five thousand, two hundred forty-two".