1012400530 has 16 divisors (see below), whose sum is σ = 1852196184. Its totient is φ = 398321280.

The previous prime is 1012400497. The next prime is 1012400567. The reversal of 1012400530 is 350042101.

It can be written as a sum of positive squares in 4 ways, for example, as 863243161 + 149157369 = 29381^2 + 12213^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 829227 + ... + 830446.

Almost surely, 2^1012400530 is an apocalyptic number.

1012400530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1012400530 is a deficient number, since it is larger than the sum of its proper divisors (839795654).

1012400530 is a wasteful number, since it uses less digits than its factorization.

1012400530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659741.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1012400530 is about 31818.2420947481. The cubic root of 1012400530 is about 1004.1165408387.

Adding to 1012400530 its reverse (350042101), we get a palindrome (1362442631).

The spelling of 1012400530 in words is "one billion, twelve million, four hundred thousand, five hundred thirty".