1042400450 has 72 divisors (see below), whose sum is σ = 2399542848. Its totient is φ = 329883840.

The previous prime is 1042400431. The next prime is 1042400459. The reversal of 1042400450 is 540042401.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1042400459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 50339 + ... + 67961.

It is an arithmetic number, because the mean of its divisors is an integer number (33326984).

Almost surely, 2^1042400450 is an apocalyptic number.

1042400450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1042400450 is an abundant number, since it is smaller than the sum of its proper divisors (1357142398).

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

1042400450 is a wasteful number, since it uses less digits than its factorization.

1042400450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17668 (or 17650 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 1042400450 is about 32286.2269396720. The cubic root of 1042400450 is about 1013.9383043769.

Adding to 1042400450 its reverse (540042401), we get a palindrome (1582442851).

The spelling of 1042400450 in words is "one billion, forty-two million, four hundred thousand, four hundred fifty".