1189542424 has 96 divisors (see below), whose sum is σ = 2778408000. Its totient is φ = 474610752.

The previous prime is 1189542413. The next prime is 1189542427. The reversal of 1189542424 is 4242459811.

1189542424 = T₆₄₃₂ + T₆₄₃₃ + ... + T₆₄₈₈.

It is a super-2 number, since 2×1189542424² = 2830022356991591552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189542427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 438079 + ... + 440785.

It is an arithmetic number, because the mean of its divisors is an integer number (28941750).

Almost surely, 2^1189542424 is an apocalyptic number.

1189542424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1189542424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1389204000).

1189542424 is an abundant number, since it is smaller than the sum of its proper divisors (1588865576).

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

1189542424 is a wasteful number, since it uses less digits than its factorization.

1189542424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805 (or 2794 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 1189542424 is about 34489.7437508602. The cubic root of 1189542424 is about 1059.5626604539.

The spelling of 1189542424 in words is "one billion, one hundred eighty-nine million, five hundred forty-two thousand, four hundred twenty-four".