5396142421 has 4 divisors (see below), whose sum is σ = 5416202700. Its totient is φ = 5376082144.

The previous prime is 5396142361. The next prime is 5396142457. The reversal of 5396142421 is 1242416935.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1880956900 + 3515185521 = 43370^2 + 59289^2 .

It is a cyclic number.

It is not a de Polignac number, because 5396142421 - 2¹³ = 5396134229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5396142461) 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, 10029736 + ... + 10030273.

It is an arithmetic number, because the mean of its divisors is an integer number (1354050675).

Almost surely, 2^5396142421 is an apocalyptic number.

It is an amenable number.

5396142421 is a deficient number, since it is larger than the sum of its proper divisors (20060279).

5396142421 is a wasteful number, since it uses less digits than its factorization.

5396142421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20060278.

The product of its digits is 51840, while the sum is 37.

The square root of 5396142421 is about 73458.4400937020. The cubic root of 5396142421 is about 1753.9927793567.

The spelling of 5396142421 in words is "five billion, three hundred ninety-six million, one hundred forty-two thousand, four hundred twenty-one".