162487421 has 2 divisors, whose sum is σ = 162487422. Its totient is φ = 162487420.

The previous prime is 162487417. The next prime is 162487439. The reversal of 162487421 is 124784261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 147355321 + 15132100 = 12139^2 + 3890^2 .

It is a cyclic number.

It is not a de Polignac number, because 162487421 - 2² = 162487417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162487441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81243710 + 81243711.

It is an arithmetic number, because the mean of its divisors is an integer number (81243711).

Almost surely, 2^162487421 is an apocalyptic number.

It is an amenable number.

162487421 is a deficient number, since it is larger than the sum of its proper divisors (1).

162487421 is an equidigital number, since it uses as much as digits as its factorization.

162487421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 35.

The square root of 162487421 is about 12747.0553854606. The cubic root of 162487421 is about 545.6823605200.

The spelling of 162487421 in words is "one hundred sixty-two million, four hundred eighty-seven thousand, four hundred twenty-one".