1002142554 has 64 divisors (see below), whose sum is σ = 2477039616. Its totient is φ = 263741184.

The previous prime is 1002142543. The next prime is 1002142567. The reversal of 1002142554 is 4552412001.

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, 18627 + ... + 48489.

It is an arithmetic number, because the mean of its divisors is an integer number (38703744).

Almost surely, 2^1002142554 is an apocalyptic number.

1002142554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002142554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1238519808).

1002142554 is an abundant number, since it is smaller than the sum of its proper divisors (1474897062).

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

1002142554 is a wasteful number, since it uses less digits than its factorization.

1002142554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29939.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1002142554 is about 31656.6352286531. The cubic root of 1002142554 is about 1000.7136752132.

Adding to 1002142554 its reverse (4552412001), we get a palindrome (5554554555).

The spelling of 1002142554 in words is "one billion, two million, one hundred forty-two thousand, five hundred fifty-four".