242637977 has 2 divisors, whose sum is σ = 242637978. Its totient is φ = 242637976.

The previous prime is 242637943. The next prime is 242638003. The reversal of 242637977 is 779736242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238733401 + 3904576 = 15451^2 + 1976^2 .

It is a cyclic number.

It is not a de Polignac number, because 242637977 - 2⁸ = 242637721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (242637907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121318988 + 121318989.

It is an arithmetic number, because the mean of its divisors is an integer number (121318989).

Almost surely, 2^242637977 is an apocalyptic number.

It is an amenable number.

242637977 is a deficient number, since it is larger than the sum of its proper divisors (1).

242637977 is an equidigital number, since it uses as much as digits as its factorization.

242637977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 889056, while the sum is 47.

The square root of 242637977 is about 15576.8410468875. The cubic root of 242637977 is about 623.7151006373.

The spelling of 242637977 in words is "two hundred forty-two million, six hundred thirty-seven thousand, nine hundred seventy-seven".