85742397 has 12 divisors (see below), whose sum is σ = 133377244. Its totient is φ = 52764480.

The previous prime is 85742359. The next prime is 85742411. The reversal of 85742397 is 79324758.

It can be written as a sum of positive squares in 2 ways, for example, as 27815076 + 57927321 = 5274^2 + 7611^2 .

It is not a de Polignac number, because 85742397 - 2⁸ = 85742141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85742347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 366304 + ... + 366537.

Almost surely, 2^85742397 is an apocalyptic number.

It is an amenable number.

85742397 is a deficient number, since it is larger than the sum of its proper divisors (47634847).

85742397 is a wasteful number, since it uses less digits than its factorization.

85742397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732860 (or 732857 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 85742397 is about 9259.7190562133. The cubic root of 85742397 is about 440.9593341804.

The spelling of 85742397 in words is "eighty-five million, seven hundred forty-two thousand, three hundred ninety-seven".