1189072542 has 16 divisors (see below), whose sum is σ = 2717880192. Its totient is φ = 339735000.

The previous prime is 1189072541. The next prime is 1189072559. The reversal of 1189072542 is 2452709811.

It is a self number, because there is not a number n which added to its sum of digits gives 1189072542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189072541) 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, 14155584 + ... + 14155667.

It is an arithmetic number, because the mean of its divisors is an integer number (169867512).

Almost surely, 2^1189072542 is an apocalyptic number.

1189072542 is an abundant number, since it is smaller than the sum of its proper divisors (1528807650).

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

1189072542 is a wasteful number, since it uses less digits than its factorization.

1189072542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28311263.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 1189072542 is about 34482.9311689131. The cubic root of 1189072542 is about 1059.4231292132.

The spelling of 1189072542 in words is "one billion, one hundred eighty-nine million, seventy-two thousand, five hundred forty-two".