140145623 has 2 divisors, whose sum is σ = 140145624. Its totient is φ = 140145622.

The previous prime is 140145613. The next prime is 140145631. The reversal of 140145623 is 326541041.

It is a strong prime.

It is an emirp because it is prime and its reverse (326541041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140145623 - 2⁶ = 140145559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140145592 and 140145601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140145613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70072811 + 70072812.

It is an arithmetic number, because the mean of its divisors is an integer number (70072812).

Almost surely, 2^140145623 is an apocalyptic number.

140145623 is a deficient number, since it is larger than the sum of its proper divisors (1).

140145623 is an equidigital number, since it uses as much as digits as its factorization.

140145623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 140145623 is about 11838.3116617193. The cubic root of 140145623 is about 519.4293826965.

Adding to 140145623 its reverse (326541041), we get a palindrome (466686664).

The spelling of 140145623 in words is "one hundred forty million, one hundred forty-five thousand, six hundred twenty-three".