1210140040 has 64 divisors (see below), whose sum is σ = 2759702400. Its totient is φ = 477539328.

The previous prime is 1210139981. The next prime is 1210140047. The reversal of 1210140040 is 400410121.

It is a super-2 number, since 2×1210140040² = 2928877832822403200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1210140040.

It is not an unprimeable number, because it can be changed into a prime (1210140047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1441941 + ... + 1442779.

It is an arithmetic number, because the mean of its divisors is an integer number (43120350).

Almost surely, 2^1210140040 is an apocalyptic number.

1210140040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210140040 is an abundant number, since it is smaller than the sum of its proper divisors (1549562360).

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

1210140040 is a wasteful number, since it uses less digits than its factorization.

1210140040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294 (or 1290 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1210140040 is about 34787.0671370841. The cubic root of 1210140040 is about 1065.6433445299.

Adding to 1210140040 its reverse (400410121), we get a palindrome (1610550161).

The spelling of 1210140040 in words is "one billion, two hundred ten million, one hundred forty thousand, forty".