76942421 has 2 divisors, whose sum is σ = 76942422. Its totient is φ = 76942420.

The previous prime is 76942409. The next prime is 76942433. The reversal of 76942421 is 12424967.

It is a balanced prime because it is at equal distance from previous prime (76942409) and next prime (76942433).

It can be written as a sum of positive squares in only one way, i.e., 75881521 + 1060900 = 8711^2 + 1030^2 .

It is a cyclic number.

It is not a de Polignac number, because 76942421 - 2¹⁸ = 76680277 is a prime.

It is a super-2 number, since 2×76942421² = 11840272298682482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76942451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38471210 + 38471211.

It is an arithmetic number, because the mean of its divisors is an integer number (38471211).

Almost surely, 2^76942421 is an apocalyptic number.

It is an amenable number.

76942421 is a deficient number, since it is larger than the sum of its proper divisors (1).

76942421 is an equidigital number, since it uses as much as digits as its factorization.

76942421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 76942421 is about 8771.6829058055. The cubic root of 76942421 is about 425.3260169769.

The spelling of 76942421 in words is "seventy-six million, nine hundred forty-two thousand, four hundred twenty-one".