146421757 has 2 divisors, whose sum is σ = 146421758. Its totient is φ = 146421756.

The previous prime is 146421683. The next prime is 146421761. The reversal of 146421757 is 757124641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133310116 + 13111641 = 11546^2 + 3621^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146421757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146421767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73210878 + 73210879.

It is an arithmetic number, because the mean of its divisors is an integer number (73210879).

Almost surely, 2^146421757 is an apocalyptic number.

It is an amenable number.

146421757 is a deficient number, since it is larger than the sum of its proper divisors (1).

146421757 is an equidigital number, since it uses as much as digits as its factorization.

146421757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 37.

The square root of 146421757 is about 12100.4858166935. The cubic root of 146421757 is about 527.0702917689.

The spelling of 146421757 in words is "one hundred forty-six million, four hundred twenty-one thousand, seven hundred fifty-seven".