1015143402 has 64 divisors (see below), whose sum is σ = 2533144320. Its totient is φ = 264052224.

The previous prime is 1015143379. The next prime is 1015143421. The reversal of 1015143402 is 2043415101.

It is a super-2 number, since 2×1015143402² = 2061032253248267208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27124 + ... + 52592.

It is an arithmetic number, because the mean of its divisors is an integer number (39580380).

Almost surely, 2^1015143402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1015143402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1266572160).

1015143402 is an abundant number, since it is smaller than the sum of its proper divisors (1518000918).

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

1015143402 is a wasteful number, since it uses less digits than its factorization.

1015143402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25567.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1015143402 is about 31861.3151329320. The cubic root of 1015143402 is about 1005.0225326004.

Adding to 1015143402 its reverse (2043415101), we get a palindrome (3058558503).

The spelling of 1015143402 in words is "one billion, fifteen million, one hundred forty-three thousand, four hundred two".