145542739 has 2 divisors, whose sum is σ = 145542740. Its totient is φ = 145542738.

The previous prime is 145542731. The next prime is 145542779. The reversal of 145542739 is 937245541.

It is a happy number.

145542739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (145542779) can be obtained adding 145542739 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145542739 - 2³ = 145542731 is a prime.

It is not a weakly prime, because it can be changed into another prime (145542731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72771369 + 72771370.

It is an arithmetic number, because the mean of its divisors is an integer number (72771370).

Almost surely, 2^145542739 is an apocalyptic number.

145542739 is a deficient number, since it is larger than the sum of its proper divisors (1).

145542739 is an equidigital number, since it uses as much as digits as its factorization.

145542739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 40.

The square root of 145542739 is about 12064.1095402852. The cubic root of 145542739 is about 526.0134486000.

The spelling of 145542739 in words is "one hundred forty-five million, five hundred forty-two thousand, seven hundred thirty-nine".