142697745 has 48 divisors (see below), whose sum is σ = 264580992. Its totient is φ = 70894080.

The previous prime is 142697729. The next prime is 142697759. The reversal of 142697745 is 547796241.

It is not a de Polignac number, because 142697745 - 2⁴ = 142697729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 142697745.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77890 + ... + 79700.

It is an arithmetic number, because the mean of its divisors is an integer number (5512104).

Almost surely, 2^142697745 is an apocalyptic number.

142697745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142697745 is a deficient number, since it is larger than the sum of its proper divisors (121883247).

142697745 is a wasteful number, since it uses less digits than its factorization.

142697745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942 (or 1939 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 142697745 is about 11945.6161414973. The cubic root of 142697745 is about 522.5634577201.

The spelling of 142697745 in words is "one hundred forty-two million, six hundred ninety-seven thousand, seven hundred forty-five".