1142421000 has 128 divisors (see below), whose sum is σ = 4073621760. Its totient is φ = 261120000.

The previous prime is 1142420977. The next prime is 1142421053. The reversal of 1142421000 is 1242411.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6201 + ... + 48200.

It is an arithmetic number, because the mean of its divisors is an integer number (31825170).

Almost surely, 2^1142421000 is an apocalyptic number.

1142421000 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 1142421000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2036810880).

1142421000 is an abundant number, since it is smaller than the sum of its proper divisors (2931200760).

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

1142421000 is a wasteful number, since it uses less digits than its factorization.

1142421000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54432 (or 54418 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1142421000 is about 33799.7189337426. The cubic root of 1142421000 is about 1045.3829018900.

Adding to 1142421000 its reverse (1242411), we get a palindrome (1143663411).

The spelling of 1142421000 in words is "one billion, one hundred forty-two million, four hundred twenty-one thousand".