1426542639 has 8 divisors (see below), whose sum is σ = 1984755072. Its totient is φ = 909679320.

The previous prime is 1426542619. The next prime is 1426542653. The reversal of 1426542639 is 9362456241.

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

It is not a de Polignac number, because 1426542639 - 2¹⁵ = 1426509871 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1426542639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1426542619) 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, 10337197 + ... + 10337334.

It is an arithmetic number, because the mean of its divisors is an integer number (248094384).

Almost surely, 2^1426542639 is an apocalyptic number.

1426542639 is a deficient number, since it is larger than the sum of its proper divisors (558212433).

1426542639 is a wasteful number, since it uses less digits than its factorization.

1426542639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20674557.

The product of its digits is 311040, while the sum is 42.

The square root of 1426542639 is about 37769.5994021647. The cubic root of 1426542639 is about 1125.7144798710.

The spelling of 1426542639 in words is "one billion, four hundred twenty-six million, five hundred forty-two thousand, six hundred thirty-nine".