145501242 has 32 divisors (see below), whose sum is σ = 299624832. Its totient is φ = 47070144.

The previous prime is 145501217. The next prime is 145501247. The reversal of 145501242 is 242105541.

It is a super-2 number, since 2×145501242² = 42341222847085128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145501247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143128 + ... + 144140.

It is an arithmetic number, because the mean of its divisors is an integer number (9363276).

Almost surely, 2^145501242 is an apocalyptic number.

145501242 is an abundant number, since it is smaller than the sum of its proper divisors (154123590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145501242 is a wasteful number, since it uses less digits than its factorization.

145501242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 145501242 is about 12062.3895642613. The cubic root of 145501242 is about 525.9634517055.

Adding to 145501242 its reverse (242105541), we get a palindrome (387606783).

The spelling of 145501242 in words is "one hundred forty-five million, five hundred one thousand, two hundred forty-two".