142040947 has 2 divisors, whose sum is σ = 142040948. Its totient is φ = 142040946.

The previous prime is 142040929. The next prime is 142040957. The reversal of 142040947 is 749040241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142040947 - 2²⁷ = 7823219 is a prime.

It is not a weakly prime, because it can be changed into another prime (142040957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71020473 + 71020474.

It is an arithmetic number, because the mean of its divisors is an integer number (71020474).

Almost surely, 2^142040947 is an apocalyptic number.

142040947 is a deficient number, since it is larger than the sum of its proper divisors (1).

142040947 is an equidigital number, since it uses as much as digits as its factorization.

142040947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 142040947 is about 11918.0932619274. The cubic root of 142040947 is about 521.7604864597.

The spelling of 142040947 in words is "one hundred forty-two million, forty thousand, nine hundred forty-seven".