542402101 has 4 divisors (see below), whose sum is σ = 570949600. Its totient is φ = 513854604.

The previous prime is 542402089. The next prime is 542402111. The reversal of 542402101 is 101204245.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 542402101 - 2⁷ = 542401973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 28547479 = 542402101 / (5 + 4 + 2 + 4 + 0 + 2 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542402111) 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, 14273721 + ... + 14273758.

It is an arithmetic number, because the mean of its divisors is an integer number (142737400).

Almost surely, 2^542402101 is an apocalyptic number.

It is an amenable number.

542402101 is a deficient number, since it is larger than the sum of its proper divisors (28547499).

542402101 is a wasteful number, since it uses less digits than its factorization.

542402101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28547498.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 542402101 is about 23289.5277109692. The cubic root of 542402101 is about 815.5309629277.

Adding to 542402101 its reverse (101204245), we get a palindrome (643606346).

The spelling of 542402101 in words is "five hundred forty-two million, four hundred two thousand, one hundred one".