145744402 has 8 divisors (see below), whose sum is σ = 230122800. Its totient is φ = 69036804.

The previous prime is 145744397. The next prime is 145744409. The reversal of 145744402 is 204447541.

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

It is not an unprimeable number, because it can be changed into a prime (145744409) 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, 1917652 + ... + 1917727.

It is an arithmetic number, because the mean of its divisors is an integer number (28765350).

Almost surely, 2^145744402 is an apocalyptic number.

145744402 is a deficient number, since it is larger than the sum of its proper divisors (84378398).

145744402 is a wasteful number, since it uses less digits than its factorization.

145744402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835400.

The product of its (nonzero) digits is 17920, while the sum is 31.

The square root of 145744402 is about 12072.4646199523. The cubic root of 145744402 is about 526.2562833282.

The spelling of 145744402 in words is "one hundred forty-five million, seven hundred forty-four thousand, four hundred two".