1342120421 has 8 divisors (see below), whose sum is σ = 1369392024. Its totient is φ = 1315123200.

The previous prime is 1342120411. The next prime is 1342120441. The reversal of 1342120421 is 1240212431.

It can be written as a sum of positive squares in 4 ways, for example, as 853224100 + 488896321 = 29210^2 + 22111^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1342120421 - 2¹⁸ = 1341858277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1342120393 and 1342120402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1342120411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58700 + ... + 78293.

It is an arithmetic number, because the mean of its divisors is an integer number (171174003).

Almost surely, 2^1342120421 is an apocalyptic number.

It is an amenable number.

1342120421 is a deficient number, since it is larger than the sum of its proper divisors (27271603).

1342120421 is a wasteful number, since it uses less digits than its factorization.

1342120421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137191.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1342120421 is about 36634.9617305655. The cubic root of 1342120421 is about 1103.0549845228.

Adding to 1342120421 its reverse (1240212431), we get a palindrome (2582332852).

The spelling of 1342120421 in words is "one billion, three hundred forty-two million, one hundred twenty thousand, four hundred twenty-one".