42929397 has 12 divisors (see below), whose sum is σ = 70867680. Its totient is φ = 24531048.

The previous prime is 42929357. The next prime is 42929407. The reversal of 42929397 is 79392924.

It is not a de Polignac number, because 42929397 - 2¹⁵ = 42896629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42929317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340647 + ... + 340772.

It is an arithmetic number, because the mean of its divisors is an integer number (5905640).

Almost surely, 2^42929397 is an apocalyptic number.

It is an amenable number.

42929397 is a deficient number, since it is larger than the sum of its proper divisors (27938283).

42929397 is a wasteful number, since it uses less digits than its factorization.

42929397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681432 (or 681429 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 42929397 is about 6552.0528844020. The cubic root of 42929397 is about 350.1479564927.

It can be divided in two parts, 4292 and 9397, that added together give a square (13689 = 117²).

The spelling of 42929397 in words is "forty-two million, nine hundred twenty-nine thousand, three hundred ninety-seven".