142043971 has 2 divisors, whose sum is σ = 142043972. Its totient is φ = 142043970.

The previous prime is 142043969. The next prime is 142043983. The reversal of 142043971 is 179340241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142043971 - 2¹ = 142043969 is a prime.

Together with 142043969, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142043771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71021985 + 71021986.

It is an arithmetic number, because the mean of its divisors is an integer number (71021986).

Almost surely, 2^142043971 is an apocalyptic number.

142043971 is a deficient number, since it is larger than the sum of its proper divisors (1).

142043971 is an equidigital number, since it uses as much as digits as its factorization.

142043971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 142043971 is about 11918.2201271834. The cubic root of 142043971 is about 521.7641891303.

The spelling of 142043971 in words is "one hundred forty-two million, forty-three thousand, nine hundred seventy-one".