145297741 has 4 divisors (see below), whose sum is σ = 147466432. Its totient is φ = 143129052.

The previous prime is 145297729. The next prime is 145297753. The reversal of 145297741 is 147792541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (145297729) and next prime (145297753).

It is a cyclic number.

It is not a de Polignac number, because 145297741 - 2⁵ = 145297709 is a prime.

It is a super-2 number, since 2×145297741² = 42222867079406162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145297694 and 145297703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145297721) 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 3 ways as a sum of consecutive naturals, for example, 1084245 + ... + 1084378.

It is an arithmetic number, because the mean of its divisors is an integer number (36866608).

Almost surely, 2^145297741 is an apocalyptic number.

It is an amenable number.

145297741 is a deficient number, since it is larger than the sum of its proper divisors (2168691).

145297741 is an equidigital number, since it uses as much as digits as its factorization.

145297741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168690.

The product of its digits is 70560, while the sum is 40.

The square root of 145297741 is about 12053.9512608937. The cubic root of 145297741 is about 525.7181295677.

The spelling of 145297741 in words is "one hundred forty-five million, two hundred ninety-seven thousand, seven hundred forty-one".