140273473 has 2 divisors, whose sum is σ = 140273474. Its totient is φ = 140273472.

The previous prime is 140273459. The next prime is 140273479. The reversal of 140273473 is 374372041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133471809 + 6801664 = 11553^2 + 2608^2 .

It is an emirp because it is prime and its reverse (374372041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140273473 is a prime.

It is not a weakly prime, because it can be changed into another prime (140273479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70136736 + 70136737.

It is an arithmetic number, because the mean of its divisors is an integer number (70136737).

Almost surely, 2^140273473 is an apocalyptic number.

It is an amenable number.

140273473 is a deficient number, since it is larger than the sum of its proper divisors (1).

140273473 is an equidigital number, since it uses as much as digits as its factorization.

140273473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 140273473 is about 11843.7102717012. The cubic root of 140273473 is about 519.5872871703.

The spelling of 140273473 in words is "one hundred forty million, two hundred seventy-three thousand, four hundred seventy-three".