1242498844005 has 16 divisors (see below), whose sum is σ = 1988079012864. Its totient is φ = 662639096000.

The previous prime is 1242498843991. The next prime is 1242498844009. The reversal of 1242498844005 is 5004488942421.

It is not a de Polignac number, because 1242498844005 - 2¹¹ = 1242498841957 is a prime.

It is a super-2 number, since 2×1242498844005² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242498844009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1300746 + ... + 2043755.

It is an arithmetic number, because the mean of its divisors is an integer number (124254938304).

Almost surely, 2^{1242498844005} is an apocalyptic number.

1242498844005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1242498844005 is a deficient number, since it is larger than the sum of its proper divisors (745580168859).

1242498844005 is a wasteful number, since it uses less digits than its factorization.

1242498844005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369276.

The product of its (nonzero) digits is 2949120, while the sum is 51.

The spelling of 1242498844005 in words is "one trillion, two hundred forty-two billion, four hundred ninety-eight million, eight hundred forty-four thousand, five".