131212001401442 has 32 divisors (see below), whose sum is σ = 214376910476400. Its totient is φ = 59868462855168.

The previous prime is 131212001401409. The next prime is 131212001401471. The reversal of 131212001401442 is 244104100212131.

It can be written as a sum of positive squares in 8 ways, for example, as 2159697707281 + 129052303694161 = 1469591^2 + 11360119^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

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, 8269934 + ... + 18188342.

Almost surely, 2^{131212001401442} is an apocalyptic number.

131212001401442 is a deficient number, since it is larger than the sum of its proper divisors (83164909074958).

131212001401442 is a wasteful number, since it uses less digits than its factorization.

131212001401442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9924230.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 131212001401442 its reverse (244104100212131), we get a palindrome (375316101613573).

The spelling of 131212001401442 in words is "one hundred thirty-one trillion, two hundred twelve billion, one million, four hundred one thousand, four hundred forty-two".