140987461 has 2 divisors, whose sum is σ = 140987462. Its totient is φ = 140987460.

The previous prime is 140987459. The next prime is 140987489. The reversal of 140987461 is 164789041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124746561 + 16240900 = 11169^2 + 4030^2 .

It is a cyclic number.

It is not a de Polignac number, because 140987461 - 2¹ = 140987459 is a prime.

Together with 140987459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140985461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70493730 + 70493731.

It is an arithmetic number, because the mean of its divisors is an integer number (70493731).

Almost surely, 2^140987461 is an apocalyptic number.

It is an amenable number.

140987461 is a deficient number, since it is larger than the sum of its proper divisors (1).

140987461 is an equidigital number, since it uses as much as digits as its factorization.

140987461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 140987461 is about 11873.8140881521. The cubic root of 140987461 is about 520.4673571973.

The spelling of 140987461 in words is "one hundred forty million, nine hundred eighty-seven thousand, four hundred sixty-one".