145020729 has 16 divisors (see below), whose sum is σ = 224608640. Its totient is φ = 81509760.

The previous prime is 145020721. The next prime is 145020737. The reversal of 145020729 is 927020541.

145020729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (145020721) and next prime (145020737).

It is not a de Polignac number, because 145020729 - 2³ = 145020721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145020696 and 145020705.

It is not an unprimeable number, because it can be changed into a prime (145020721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55324 + ... + 57885.

It is an arithmetic number, because the mean of its divisors is an integer number (14038040).

Almost surely, 2^145020729 is an apocalyptic number.

It is an amenable number.

145020729 is a deficient number, since it is larger than the sum of its proper divisors (79587911).

145020729 is a wasteful number, since it uses less digits than its factorization.

145020729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113280.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 145020729 is about 12042.4552729084. The cubic root of 145020729 is about 525.3838209123.

The spelling of 145020729 in words is "one hundred forty-five million, twenty thousand, seven hundred twenty-nine".