145502442 has 24 divisors (see below), whose sum is σ = 316617444. Its totient is φ = 48291264.

The previous prime is 145502431. The next prime is 145502443. The reversal of 145502442 is 244205541.

It can be written as a sum of positive squares in 2 ways, for example, as 144504441 + 998001 = 12021^2 + 999^2 .

It is not an unprimeable number, because it can be changed into a prime (145502443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13153 + ... + 21540.

Almost surely, 2^145502442 is an apocalyptic number.

145502442 is an abundant number, since it is smaller than the sum of its proper divisors (171115002).

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

145502442 is a wasteful number, since it uses less digits than its factorization.

145502442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34934 (or 34931 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 145502442 is about 12062.4393055468. The cubic root of 145502442 is about 525.9648976368.

Adding to 145502442 its reverse (244205541), we get a palindrome (389707983).

The spelling of 145502442 in words is "one hundred forty-five million, five hundred two thousand, four hundred forty-two".