145333442 has 16 divisors (see below), whose sum is σ = 238784760. Its totient is φ = 66033408.

The previous prime is 145333399. The next prime is 145333469. The reversal of 145333442 is 244333541.

It can be written as a sum of positive squares in 4 ways, for example, as 143256961 + 2076481 = 11969^2 + 1441^2 .

It is a super-2 number, since 2×145333442² = 42243618727134728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 72713 + ... + 74684.

Almost surely, 2^145333442 is an apocalyptic number.

145333442 is a deficient number, since it is larger than the sum of its proper divisors (93451318).

145333442 is a wasteful number, since it uses less digits than its factorization.

145333442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147445.

The product of its digits is 17280, while the sum is 29.

The square root of 145333442 is about 12055.4320536429. The cubic root of 145333442 is about 525.7611839786.

Adding to 145333442 its reverse (244333541), we get a palindrome (389666983).

Subtracting 145333442 from its reverse (244333541), we obtain a palindrome (99000099).

The spelling of 145333442 in words is "one hundred forty-five million, three hundred thirty-three thousand, four hundred forty-two".