1542628069 has 8 divisors (see below), whose sum is σ = 1624746240. Its totient is φ = 1460602656.

The previous prime is 1542628063. The next prime is 1542628099. The reversal of 1542628069 is 9608262451.

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

It is not a de Polignac number, because 1542628069 - 2⁷ = 1542627941 is a prime.

It is a super-2 number, since 2×1542628069² = 4759402718533337522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542628063) 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, 12369 + ... + 56905.

It is an arithmetic number, because the mean of its divisors is an integer number (203093280).

Almost surely, 2^1542628069 is an apocalyptic number.

1542628069 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1542628069 is a deficient number, since it is larger than the sum of its proper divisors (82118171).

1542628069 is a wasteful number, since it uses less digits than its factorization.

1542628069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46379.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 1542628069 is about 39276.3041667619. The cubic root of 1542628069 is about 1155.4568806484.

The spelling of 1542628069 in words is "one billion, five hundred forty-two million, six hundred twenty-eight thousand, sixty-nine".