145742278 has 16 divisors (see below), whose sum is σ = 238807440. Its totient is φ = 66157600.

The previous prime is 145742251. The next prime is 145742287. The reversal of 145742278 is 872247541.

It is a self number, because there is not a number n which added to its sum of digits gives 145742278.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14028 + ... + 22096.

It is an arithmetic number, because the mean of its divisors is an integer number (14925465).

Almost surely, 2^145742278 is an apocalyptic number.

145742278 is a deficient number, since it is larger than the sum of its proper divisors (93065162).

145742278 is a wasteful number, since it uses less digits than its factorization.

145742278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8903.

The product of its digits is 125440, while the sum is 40.

The square root of 145742278 is about 12072.3766508505. The cubic root of 145742278 is about 526.2537268577.

The spelling of 145742278 in words is "one hundred forty-five million, seven hundred forty-two thousand, two hundred seventy-eight".