141685240921 has 9 divisors (see below), whose sum is σ = 164820590271. Its totient is φ = 121442233752.

The previous prime is 141685240913. The next prime is 141685240951. The reversal of 141685240921 is 129042586141.

The square root of 141685240921 is 376411.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 98323009225 + 43362231696 = 313565^2 + 208236^2 .

It is not a de Polignac number, because 141685240921 - 2³ = 141685240913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (141685240951) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2607991 + ... + 2661763.

It is an arithmetic number, because the mean of its divisors is an integer number (18313398919).

Almost surely, 2^141685240921 is an apocalyptic number.

141685240921 is the 376411-st square number.

141685240921 is the 188206-th centered octagonal number.

It is an amenable number.

141685240921 is a deficient number, since it is larger than the sum of its proper divisors (23135349350).

141685240921 is an frugal number, since it uses more digits than its factorization.

141685240921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107560 (or 53780 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 141685240921 in words is "one hundred forty-one billion, six hundred eighty-five million, two hundred forty thousand, nine hundred twenty-one".