1429878740 has 24 divisors (see below), whose sum is σ = 3043881960. Its totient is φ = 564115968.

The previous prime is 1429878739. The next prime is 1429878757. The reversal of 1429878740 is 478789241.

It can be written as a sum of positive squares in 4 ways, for example, as 13410244 + 1416468496 = 3662^2 + 37636^2 .

It is a super-2 number, since 2×1429878740² = 4089106422207975200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488225 + ... + 491144.

It is an arithmetic number, because the mean of its divisors is an integer number (126828415).

Almost surely, 2^1429878740 is an apocalyptic number.

1429878740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1429878740 is an abundant number, since it is smaller than the sum of its proper divisors (1614003220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1429878740 is a wasteful number, since it uses less digits than its factorization.

1429878740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979451 (or 979449 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 50.

The square root of 1429878740 is about 37813.7374508260. The cubic root of 1429878740 is about 1126.5913256032.

The spelling of 1429878740 in words is "one billion, four hundred twenty-nine million, eight hundred seventy-eight thousand, seven hundred forty".