1290627642 has 8 divisors (see below), whose sum is σ = 2581255296. Its totient is φ = 430209212.

The previous prime is 1290627577. The next prime is 1290627707. The reversal of 1290627642 is 2467260921.

It is an interprime number because it is at equal distance from previous prime (1290627577) and next prime (1290627707).

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

1290627642 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1290627642.

It is an unprimeable number.

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, 107552298 + ... + 107552309.

It is an arithmetic number, because the mean of its divisors is an integer number (322656912).

Almost surely, 2^1290627642 is an apocalyptic number.

1290627642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1290627642 is a wasteful number, since it uses less digits than its factorization.

1290627642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215104612.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 1290627642 is about 35925.3064287558. The cubic root of 1290627642 is about 1088.7637534243.

The spelling of 1290627642 in words is "one billion, two hundred ninety million, six hundred twenty-seven thousand, six hundred forty-two".