97129742 has 4 divisors (see below), whose sum is σ = 145694616. Its totient is φ = 48564870.

The previous prime is 97129717. The next prime is 97129757. The reversal of 97129742 is 24792179.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24792179 = 139 ⋅178361.

It is a self number, because there is not a number n which added to its sum of digits gives 97129742.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24282434 + ... + 24282437.

It is an arithmetic number, because the mean of its divisors is an integer number (36423654).

Almost surely, 2^97129742 is an apocalyptic number.

97129742 is a deficient number, since it is larger than the sum of its proper divisors (48564874).

97129742 is a wasteful number, since it uses less digits than its factorization.

97129742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48564873.

The product of its digits is 63504, while the sum is 41.

The square root of 97129742 is about 9855.4422528875. The cubic root of 97129742 is about 459.6748521412.

The spelling of 97129742 in words is "ninety-seven million, one hundred twenty-nine thousand, seven hundred forty-two".