145512739 has 2 divisors, whose sum is σ = 145512740. Its totient is φ = 145512738.

The previous prime is 145512713. The next prime is 145512751. The reversal of 145512739 is 937215541.

It is a strong prime.

It is an emirp because it is prime and its reverse (937215541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145512739 - 2¹⁹ = 144988451 is a prime.

It is a super-2 number, since 2×145512739² = 42347914422564242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145512698 and 145512707.

It is not a weakly prime, because it can be changed into another prime (145512439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72756369 + 72756370.

It is an arithmetic number, because the mean of its divisors is an integer number (72756370).

Almost surely, 2^145512739 is an apocalyptic number.

145512739 is a deficient number, since it is larger than the sum of its proper divisors (1).

145512739 is an equidigital number, since it uses as much as digits as its factorization.

145512739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 37.

The square root of 145512739 is about 12062.8661187961. The cubic root of 145512739 is about 525.9773046056.

The spelling of 145512739 in words is "one hundred forty-five million, five hundred twelve thousand, seven hundred thirty-nine".