145120816 has 20 divisors (see below), whose sum is σ = 281834392. Its totient is φ = 72389376.

The previous prime is 145120813. The next prime is 145120817. The reversal of 145120816 is 618021541.

It is not an unprimeable number, because it can be changed into a prime (145120813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3546 + ... + 17401.

Almost surely, 2^145120816 is an apocalyptic number.

145120816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145120816 is a deficient number, since it is larger than the sum of its proper divisors (136713576).

145120816 is a wasteful number, since it uses less digits than its factorization.

145120816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21388 (or 21382 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 145120816 is about 12046.6101455970. The cubic root of 145120816 is about 525.5046588053.

The spelling of 145120816 in words is "one hundred forty-five million, one hundred twenty thousand, eight hundred sixteen".