145139754 has 32 divisors (see below), whose sum is σ = 299013120. Its totient is φ = 46937600.

The previous prime is 145139723. The next prime is 145139759. The reversal of 145139754 is 457931541.

It is not an unprimeable number, because it can be changed into a prime (145139759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45442 + ... + 48530.

It is an arithmetic number, because the mean of its divisors is an integer number (9344160).

Almost surely, 2^145139754 is an apocalyptic number.

145139754 is an abundant number, since it is smaller than the sum of its proper divisors (153873366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145139754 is a wasteful number, since it uses less digits than its factorization.

145139754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3326.

The product of its digits is 75600, while the sum is 39.

The square root of 145139754 is about 12047.3961502061. The cubic root of 145139754 is about 525.5275169421.

The spelling of 145139754 in words is "one hundred forty-five million, one hundred thirty-nine thousand, seven hundred fifty-four".