1142471000 has 128 divisors (see below), whose sum is σ = 2934696960. Its totient is φ = 412848000.

The previous prime is 1142470961. The next prime is 1142471023. The reversal of 1142471000 is 1742411.

It is a super-3 number, since 3×1142471000³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3112817 + ... + 3113183.

It is an arithmetic number, because the mean of its divisors is an integer number (22927320).

Almost surely, 2^1142471000 is an apocalyptic number.

1142471000 is a gapful number since it is divisible by the number (10) 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 1142471000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1467348480).

1142471000 is an abundant number, since it is smaller than the sum of its proper divisors (1792225960).

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

1142471000 is a wasteful number, since it uses less digits than its factorization.

1142471000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 1142471000 is about 33800.4585767708. The cubic root of 1142471000 is about 1045.3981526550.

The spelling of 1142471000 in words is "one billion, one hundred forty-two million, four hundred seventy-one thousand".