942717421 has 2 divisors, whose sum is σ = 942717422. Its totient is φ = 942717420.

The previous prime is 942717389. The next prime is 942717427. The reversal of 942717421 is 124717249.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 600985225 + 341732196 = 24515^2 + 18486^2 .

It is a cyclic number.

It is not a de Polignac number, because 942717421 - 2⁵ = 942717389 is a prime.

It is a super-2 number, since 2×942717421² = 1777432271713782482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (942717427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471358710 + 471358711.

It is an arithmetic number, because the mean of its divisors is an integer number (471358711).

Almost surely, 2^942717421 is an apocalyptic number.

It is an amenable number.

942717421 is a deficient number, since it is larger than the sum of its proper divisors (1).

942717421 is an equidigital number, since it uses as much as digits as its factorization.

942717421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 37.

The square root of 942717421 is about 30703.7037016709. The cubic root of 942717421 is about 980.5291537002.

The spelling of 942717421 in words is "nine hundred forty-two million, seven hundred seventeen thousand, four hundred twenty-one".