145015642 has 16 divisors (see below), whose sum is σ = 219754080. Its totient is φ = 71767728.

The previous prime is 145015609. The next prime is 145015643. The reversal of 145015642 is 246510541.

It is a self number, because there is not a number n which added to its sum of digits gives 145015642.

It is not an unprimeable number, because it can be changed into a prime (145015643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129268 + ... + 130384.

It is an arithmetic number, because the mean of its divisors is an integer number (13734630).

Almost surely, 2^145015642 is an apocalyptic number.

145015642 is a deficient number, since it is larger than the sum of its proper divisors (74738438).

145015642 is a wasteful number, since it uses less digits than its factorization.

145015642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1725.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 145015642 is about 12042.2440599749. The cubic root of 145015642 is about 525.3776777474.

The spelling of 145015642 in words is "one hundred forty-five million, fifteen thousand, six hundred forty-two".