140420101 has 2 divisors, whose sum is σ = 140420102. Its totient is φ = 140420100.

The previous prime is 140420081. The next prime is 140420107. The reversal of 140420101 is 101024041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76580001 + 63840100 = 8751^2 + 7990^2 .

It is a cyclic number.

It is not a de Polignac number, because 140420101 - 2⁹ = 140419589 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140420107) 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 as a sum of consecutive naturals, namely, 70210050 + 70210051.

It is an arithmetic number, because the mean of its divisors is an integer number (70210051).

Almost surely, 2^140420101 is an apocalyptic number.

It is an amenable number.

140420101 is a deficient number, since it is larger than the sum of its proper divisors (1).

140420101 is an equidigital number, since it uses as much as digits as its factorization.

140420101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 140420101 is about 11849.8987759390. The cubic root of 140420101 is about 519.7682658276.

Adding to 140420101 its reverse (101024041), we get a palindrome (241444142).

The spelling of 140420101 in words is "one hundred forty million, four hundred twenty thousand, one hundred one".