145228942 has 4 divisors (see below), whose sum is σ = 217843416. Its totient is φ = 72614470.

The previous prime is 145228933. The next prime is 145228961. The reversal of 145228942 is 249822541.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36307234 + ... + 36307237.

It is an arithmetic number, because the mean of its divisors is an integer number (54460854).

Almost surely, 2^145228942 is an apocalyptic number.

145228942 is a deficient number, since it is larger than the sum of its proper divisors (72614474).

145228942 is an equidigital number, since it uses as much as digits as its factorization.

145228942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72614473.

The product of its digits is 46080, while the sum is 37.

The square root of 145228942 is about 12051.0971284776. The cubic root of 145228942 is about 525.6351399962.

The spelling of 145228942 in words is "one hundred forty-five million, two hundred twenty-eight thousand, nine hundred forty-two".