145722407 has 2 divisors, whose sum is σ = 145722408. Its totient is φ = 145722406.

The previous prime is 145722403. The next prime is 145722431. The reversal of 145722407 is 704227541.

145722407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145722407 - 2² = 145722403 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145722403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72861203 + 72861204.

It is an arithmetic number, because the mean of its divisors is an integer number (72861204).

Almost surely, 2^145722407 is an apocalyptic number.

145722407 is a deficient number, since it is larger than the sum of its proper divisors (1).

145722407 is an equidigital number, since it uses as much as digits as its factorization.

145722407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 145722407 is about 12071.5536282618. The cubic root of 145722407 is about 526.2298086938.

Adding to 145722407 its reverse (704227541), we get a palindrome (849949948).

The spelling of 145722407 in words is "one hundred forty-five million, seven hundred twenty-two thousand, four hundred seven".