1491233842120 has 64 divisors (see below), whose sum is σ = 3660485696640. Its totient is φ = 542239526400.

The previous prime is 1491233842103. The next prime is 1491233842127. The reversal of 1491233842120 is 212483321941.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (1491233842127) 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, 10011309 + ... + 10159171.

It is an arithmetic number, because the mean of its divisors is an integer number (57195089010).

Almost surely, 2^{1491233842120} is an apocalyptic number.

1491233842120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1491233842120 is an abundant number, since it is smaller than the sum of its proper divisors (2169251854520).

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

1491233842120 is a wasteful number, since it uses less digits than its factorization.

1491233842120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170806 (or 170802 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 1491233842120 in words is "one trillion, four hundred ninety-one billion, two hundred thirty-three million, eight hundred forty-two thousand, one hundred twenty".