141720157 has 4 divisors (see below), whose sum is σ = 141753820. Its totient is φ = 141686496.

The previous prime is 141720151. The next prime is 141720167. The reversal of 141720157 is 751027141.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48288601 + 93431556 = 6949^2 + 9666^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-141720157 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 (141720151) 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, 9432 + ... + 19297.

It is an arithmetic number, because the mean of its divisors is an integer number (35438455).

Almost surely, 2^141720157 is an apocalyptic number.

It is an amenable number.

141720157 is a deficient number, since it is larger than the sum of its proper divisors (33663).

141720157 is an equidigital number, since it uses as much as digits as its factorization.

141720157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33662.

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 141720157 is about 11904.6275456228. The cubic root of 141720157 is about 521.3674033136.

Adding to 141720157 its reverse (751027141), we get a palindrome (892747298).

The spelling of 141720157 in words is "one hundred forty-one million, seven hundred twenty thousand, one hundred fifty-seven".