1542421011431 has 4 divisors (see below), whose sum is σ = 1584108065832. Its totient is φ = 1500733957032.

The previous prime is 1542421011371. The next prime is 1542421011449. The reversal of 1542421011431 is 1341101242451.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1542421011431 - 2⁶ = 1542421011367 is a prime.

It is a super-2 number, since 2×1542421011431² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1542421011394 and 1542421011403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542421011331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20843527145 + ... + 20843527218.

It is an arithmetic number, because the mean of its divisors is an integer number (396027016458).

Almost surely, 2^{1542421011431} is an apocalyptic number.

1542421011431 is a deficient number, since it is larger than the sum of its proper divisors (41687054401).

1542421011431 is an equidigital number, since it uses as much as digits as its factorization.

1542421011431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41687054400.

The product of its (nonzero) digits is 3840, while the sum is 29.

Adding to 1542421011431 its reverse (1341101242451), we get a palindrome (2883522253882).

The spelling of 1542421011431 in words is "one trillion, five hundred forty-two billion, four hundred twenty-one million, eleven thousand, four hundred thirty-one".