141290721 has 48 divisors (see below), whose sum is σ = 241218432. Its totient is φ = 78566400.

The previous prime is 141290719. The next prime is 141290731. The reversal of 141290721 is 127092141.

It is not a de Polignac number, because 141290721 - 2¹ = 141290719 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (141290731) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 400081 + ... + 400433.

It is an arithmetic number, because the mean of its divisors is an integer number (5025384).

Almost surely, 2^141290721 is an apocalyptic number.

141290721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

141290721 is the 6354-th nonagonal number.

It is an amenable number.

141290721 is a deficient number, since it is larger than the sum of its proper divisors (99927711).

141290721 is a wasteful number, since it uses less digits than its factorization.

141290721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 691 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 141290721 is about 11886.5773458973. The cubic root of 141290721 is about 520.8402600949.

The spelling of 141290721 in words is "one hundred forty-one million, two hundred ninety thousand, seven hundred twenty-one".