145521342 has 24 divisors (see below), whose sum is σ = 331891560. Its totient is φ = 45954000.

The previous prime is 145521307. The next prime is 145521371. The reversal of 145521342 is 243125541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212409 + ... + 213092.

It is an arithmetic number, because the mean of its divisors is an integer number (13828815).

Almost surely, 2^145521342 is an apocalyptic number.

145521342 is an abundant number, since it is smaller than the sum of its proper divisors (186370218).

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

145521342 is a wasteful number, since it uses less digits than its factorization.

145521342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425528 (or 425525 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 145521342 is about 12063.2227037388. Note that the first 3 decimals coincide. The cubic root of 145521342 is about 525.9876700064.

Adding to 145521342 its reverse (243125541), we get a palindrome (388646883).

The spelling of 145521342 in words is "one hundred forty-five million, five hundred twenty-one thousand, three hundred forty-two".