1051208240 has 40 divisors (see below), whose sum is σ = 2528342640. Its totient is φ = 405982976.

The previous prime is 1051208239. The next prime is 1051208293. The reversal of 1051208240 is 428021501.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1051208240² = 2210077527687795200, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 224234 + ... + 228873.

It is an arithmetic number, because the mean of its divisors is an integer number (63208566).

Almost surely, 2^1051208240 is an apocalyptic number.

1051208240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1051208240 is an abundant number, since it is smaller than the sum of its proper divisors (1477134400).

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

1051208240 is a wasteful number, since it uses less digits than its factorization.

1051208240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453149 (or 453143 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 1051208240 is about 32422.3416797738. The cubic root of 1051208240 is about 1016.7860647494.

Adding to 1051208240 its reverse (428021501), we get a palindrome (1479229741).

The spelling of 1051208240 in words is "one billion, fifty-one million, two hundred eight thousand, two hundred forty".