542097629 has 4 divisors (see below), whose sum is σ = 546054684. Its totient is φ = 538140576.

The previous prime is 542097623. The next prime is 542097643. The reversal of 542097629 is 926790245.

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 161925625 + 380172004 = 12725^2 + 19498^2 .

It is a cyclic number.

It is not a de Polignac number, because 542097629 - 2¹⁶ = 542032093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 542097629.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (542097623) 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, 1978322 + ... + 1978595.

It is an arithmetic number, because the mean of its divisors is an integer number (136513671).

Almost surely, 2^542097629 is an apocalyptic number.

It is an amenable number.

542097629 is a deficient number, since it is larger than the sum of its proper divisors (3957055).

542097629 is a wasteful number, since it uses less digits than its factorization.

542097629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957054.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 542097629 is about 23282.9901215458. The cubic root of 542097629 is about 815.3783376467.

The spelling of 542097629 in words is "five hundred forty-two million, ninety-seven thousand, six hundred twenty-nine".