142203977 has 2 divisors, whose sum is σ = 142203978. Its totient is φ = 142203976.

The previous prime is 142203973. The next prime is 142203979. The reversal of 142203977 is 779302241.

142203977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142181776 + 22201 = 11924^2 + 149^2 .

It is an emirp because it is prime and its reverse (779302241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142203977 - 2² = 142203973 is a prime.

Together with 142203979, 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 (142203973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71101988 + 71101989.

It is an arithmetic number, because the mean of its divisors is an integer number (71101989).

Almost surely, 2^142203977 is an apocalyptic number.

It is an amenable number.

142203977 is a deficient number, since it is larger than the sum of its proper divisors (1).

142203977 is an equidigital number, since it uses as much as digits as its factorization.

142203977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 142203977 is about 11924.9309012673. The cubic root of 142203977 is about 521.9600300669.

The spelling of 142203977 in words is "one hundred forty-two million, two hundred three thousand, nine hundred seventy-seven".