145402594 has 8 divisors (see below), whose sum is σ = 218180700. Its totient is φ = 72675696.

The previous prime is 145402583. The next prime is 145402597. The reversal of 145402594 is 495204541.

It can be written as a sum of positive squares in 2 ways, for example, as 141253225 + 4149369 = 11885^2 + 2037^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×145402594² = 42283828683857672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145402597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4669 + ... + 17680.

Almost surely, 2^145402594 is an apocalyptic number.

145402594 is a deficient number, since it is larger than the sum of its proper divisors (72778106).

145402594 is a wasteful number, since it uses less digits than its factorization.

145402594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25604.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 145402594 is about 12058.2997972351. The cubic root of 145402594 is about 525.8445593118.

The spelling of 145402594 in words is "one hundred forty-five million, four hundred two thousand, five hundred ninety-four".