140605063021 has 8 divisors (see below), whose sum is σ = 149001161400. Its totient is φ = 132445474560.

The previous prime is 140605063019. The next prime is 140605063031. The reversal of 140605063021 is 120360506041.

It can be written as a sum of positive squares in 4 ways, for example, as 44555625 + 140560507396 = 6675^2 + 374914^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140605063021 - 2¹ = 140605063019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140605063031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59126256 + ... + 59128633.

It is an arithmetic number, because the mean of its divisors is an integer number (18625145175).

Almost surely, 2^140605063021 is an apocalyptic number.

It is an amenable number.

140605063021 is a deficient number, since it is larger than the sum of its proper divisors (8396098379).

140605063021 is a wasteful number, since it uses less digits than its factorization.

140605063021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118254959.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 140605063021 its reverse (120360506041), we get a palindrome (260965569062).

The spelling of 140605063021 in words is "one hundred forty billion, six hundred five million, sixty-three thousand, twenty-one".