141962981 has 4 divisors (see below), whose sum is σ = 146542464. Its totient is φ = 137383500.

The previous prime is 141962963. The next prime is 141962987. The reversal of 141962981 is 189269141.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-141962981 is a prime.

It is a super-2 number, since 2×141962981² = 40306975948812722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141962987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2289695 + ... + 2289756.

It is an arithmetic number, because the mean of its divisors is an integer number (36635616).

Almost surely, 2^141962981 is an apocalyptic number.

It is an amenable number.

141962981 is a deficient number, since it is larger than the sum of its proper divisors (4579483).

141962981 is an equidigital number, since it uses as much as digits as its factorization.

141962981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4579482.

The product of its digits is 31104, while the sum is 41.

The square root of 141962981 is about 11914.8219038305. The cubic root of 141962981 is about 521.6650045483.

The spelling of 141962981 in words is "one hundred forty-one million, nine hundred sixty-two thousand, nine hundred eighty-one".