1142664552 has 48 divisors (see below), whose sum is σ = 3103965540. Its totient is φ = 379749888.

The previous prime is 1142664527. The next prime is 1142664553. The reversal of 1142664552 is 2554662411.

1142664552 is a `hidden beast` number, since 1 + 1 + 4 + 2 + 6 + 645 + 5 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1064977956 + 77686596 = 32634^2 + 8814^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1142664553) 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, 718 + ... + 47810.

Almost surely, 2^1142664552 is an apocalyptic number.

1142664552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1142664552 is an abundant number, since it is smaller than the sum of its proper divisors (1961300988).

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

1142664552 is a wasteful number, since it uses less digits than its factorization.

1142664552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47442 (or 47435 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 1142664552 is about 33803.3216119363. The cubic root of 1142664552 is about 1045.4571847816.

The spelling of 1142664552 in words is "one billion, one hundred forty-two million, six hundred sixty-four thousand, five hundred fifty-two".