140236501 has 2 divisors, whose sum is σ = 140236502. Its totient is φ = 140236500.

The previous prime is 140236487. The next prime is 140236531. The reversal of 140236501 is 105632041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139216401 + 1020100 = 11799^2 + 1010^2 .

It is a cyclic number.

It is not a de Polignac number, because 140236501 - 2⁵ = 140236469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140236531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70118250 + 70118251.

It is an arithmetic number, because the mean of its divisors is an integer number (70118251).

Almost surely, 2^140236501 is an apocalyptic number.

It is an amenable number.

140236501 is a deficient number, since it is larger than the sum of its proper divisors (1).

140236501 is an equidigital number, since it uses as much as digits as its factorization.

140236501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 140236501 is about 11842.1493403858. The cubic root of 140236501 is about 519.5416338030.

Adding to 140236501 its reverse (105632041), we get a palindrome (245868542).

The spelling of 140236501 in words is "one hundred forty million, two hundred thirty-six thousand, five hundred one".