692542421 has 2 divisors, whose sum is σ = 692542422. Its totient is φ = 692542420.

The previous prime is 692542349. The next prime is 692542429. The reversal of 692542421 is 124245296.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 453221521 + 239320900 = 21289^2 + 15470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-692542421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (692542429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346271210 + 346271211.

It is an arithmetic number, because the mean of its divisors is an integer number (346271211).

Almost surely, 2^692542421 is an apocalyptic number.

It is an amenable number.

692542421 is a deficient number, since it is larger than the sum of its proper divisors (1).

692542421 is an equidigital number, since it uses as much as digits as its factorization.

692542421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 35.

The square root of 692542421 is about 26316.2007326286. The cubic root of 692542421 is about 884.7395878026.

The spelling of 692542421 in words is "six hundred ninety-two million, five hundred forty-two thousand, four hundred twenty-one".