201429457 has 2 divisors, whose sum is σ = 201429458. Its totient is φ = 201429456.

The previous prime is 201429427. The next prime is 201429461. The reversal of 201429457 is 754924102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156150016 + 45279441 = 12496^2 + 6729^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201429457 is a prime.

It is a super-2 number, since 2×201429457² = 81147652294629698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201429407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100714728 + 100714729.

It is an arithmetic number, because the mean of its divisors is an integer number (100714729).

Almost surely, 2^201429457 is an apocalyptic number.

It is an amenable number.

201429457 is a deficient number, since it is larger than the sum of its proper divisors (1).

201429457 is an equidigital number, since it uses as much as digits as its factorization.

201429457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 201429457 is about 14192.5845778702. The cubic root of 201429457 is about 586.1934939772.

The spelling of 201429457 in words is "two hundred one million, four hundred twenty-nine thousand, four hundred fifty-seven".