1040020154 has 4 divisors (see below), whose sum is σ = 1560030234. Its totient is φ = 520010076.

The previous prime is 1040020151. The next prime is 1040020159. The reversal of 1040020154 is 4510200401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1000267129 + 39753025 = 31627^2 + 6305^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1040020151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260005037 + ... + 260005040.

Almost surely, 2^1040020154 is an apocalyptic number.

1040020154 is a deficient number, since it is larger than the sum of its proper divisors (520010080).

1040020154 is an equidigital number, since it uses as much as digits as its factorization.

1040020154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520010079.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1040020154 is about 32249.3434661855. The cubic root of 1040020154 is about 1013.1659483980.

Adding to 1040020154 its reverse (4510200401), we get a palindrome (5550220555).

The spelling of 1040020154 in words is "one billion, forty million, twenty thousand, one hundred fifty-four".