1012002154 has 8 divisors (see below), whose sum is σ = 1570348260. Its totient is φ = 488552736.

The previous prime is 1012002137. The next prime is 1012002157. The reversal of 1012002154 is 4512002101.

It can be written as a sum of positive squares in 2 ways, for example, as 998876025 + 13126129 = 31605^2 + 3623^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1012002157) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 8724099 + ... + 8724214.

Almost surely, 2^1012002154 is an apocalyptic number.

1012002154 is a deficient number, since it is larger than the sum of its proper divisors (558346106).

1012002154 is a wasteful number, since it uses less digits than its factorization.

1012002154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17448344.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1012002154 is about 31811.9812963607. The cubic root of 1012002154 is about 1003.9848181331.

Adding to 1012002154 its reverse (4512002101), we get a palindrome (5524004255).

The spelling of 1012002154 in words is "one billion, twelve million, two thousand, one hundred fifty-four".