145804741 has 2 divisors, whose sum is σ = 145804742. Its totient is φ = 145804740.

The previous prime is 145804709. The next prime is 145804781. The reversal of 145804741 is 147408541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140920641 + 4884100 = 11871^2 + 2210^2 .

It is a cyclic number.

It is not a de Polignac number, because 145804741 - 2⁵ = 145804709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145804697 and 145804706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145804781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72902370 + 72902371.

It is an arithmetic number, because the mean of its divisors is an integer number (72902371).

Almost surely, 2^145804741 is an apocalyptic number.

It is an amenable number.

145804741 is a deficient number, since it is larger than the sum of its proper divisors (1).

145804741 is an equidigital number, since it uses as much as digits as its factorization.

145804741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 145804741 is about 12074.9633953897. The cubic root of 145804741 is about 526.3288976593.

It can be divided in two parts, 14580 and 4741, that added together give a square (19321 = 139²).

The spelling of 145804741 in words is "one hundred forty-five million, eight hundred four thousand, seven hundred forty-one".