145009402 has 8 divisors (see below), whose sum is σ = 219174912. Its totient is φ = 71951100.

The previous prime is 145009393. The next prime is 145009451. The reversal of 145009402 is 204900541.

145009402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276474 + ... + 276997.

It is an arithmetic number, because the mean of its divisors is an integer number (27396864).

Almost surely, 2^145009402 is an apocalyptic number.

145009402 is a deficient number, since it is larger than the sum of its proper divisors (74165510).

145009402 is a wasteful number, since it uses less digits than its factorization.

145009402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553604.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 145009402 is about 12041.9849692648. The cubic root of 145009402 is about 525.3701420000.

Adding to 145009402 its reverse (204900541), we get a palindrome (349909943).

The spelling of 145009402 in words is "one hundred forty-five million, nine thousand, four hundred two".