1097431842 has 16 divisors (see below), whose sum is σ = 2363699520. Its totient is φ = 337671312.

The previous prime is 1097431831. The next prime is 1097431847. The reversal of 1097431842 is 2481347901.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1097431842.

It is not an unprimeable number, because it can be changed into a prime (1097431847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7034742 + ... + 7034897.

It is an arithmetic number, because the mean of its divisors is an integer number (147731220).

Almost surely, 2^1097431842 is an apocalyptic number.

1097431842 is an abundant number, since it is smaller than the sum of its proper divisors (1266267678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1097431842 is a wasteful number, since it uses less digits than its factorization.

1097431842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14069657.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 1097431842 is about 33127.5088408410. The cubic root of 1097431842 is about 1031.4761384111.

The spelling of 1097431842 in words is "one billion, ninety-seven million, four hundred thirty-one thousand, eight hundred forty-two".