69142090 has 32 divisors (see below), whose sum is σ = 132917760. Its totient is φ = 25838400.

The previous prime is 69142067. The next prime is 69142091. The reversal of 69142090 is 9024196.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (69142091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5145 + ... + 12835.

It is an arithmetic number, because the mean of its divisors is an integer number (4153680).

Almost surely, 2^69142090 is an apocalyptic number.

69142090 is a deficient number, since it is larger than the sum of its proper divisors (63775670).

69142090 is a wasteful number, since it uses less digits than its factorization.

69142090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7758.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 69142090 is about 8315.1722772291. The cubic root of 69142090 is about 410.4379417225.

The spelling of 69142090 in words is "sixty-nine million, one hundred forty-two thousand, ninety".