1242646000 has 80 divisors (see below), whose sum is σ = 3021378048. Its totient is φ = 494304000.

The previous prime is 1242645947. The next prime is 1242646043. The reversal of 1242646000 is 6462421.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380374 + ... + 383626.

Almost surely, 2^1242646000 is an apocalyptic number.

1242646000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242646000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1510689024).

1242646000 is an abundant number, since it is smaller than the sum of its proper divisors (1778732048).

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

1242646000 is a wasteful number, since it uses less digits than its factorization.

1242646000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3467 (or 3451 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1242646000 is about 35251.1843772660. The cubic root of 1242646000 is about 1075.1006936506.

The spelling of 1242646000 in words is "one billion, two hundred forty-two million, six hundred forty-six thousand".